Postfixemplois

...Actuellement, j'utilise le smtp OVH pour envoyer mes mails, mais il ne permet pas de signer (DKIM) les mails sortants. Je veux donc monter un serveur smtp pour que mes mails sortant passent par lui, et que celui-ci signe (DKIM) les mails et les envoie à leur destinataire. Je pense que la solution est d'installer / configurer postfix en serveur (relais ?) smtp J'ai pour cela pris un VPS (Debian 11) chez OvH. Il est vierge et n'attend que vous pour y configurer Postfix Il faudra également configurer les enregistrements DNS SPF, DMARC et RDNS pour mes deux domaines. ...

...travaille sur des serveurs OVH sur lesquels on a installé des VM, parfois avec Aapanel (pour des vieux sites en PHP5 ou pour des sites Symfony), parfois avec Plesk (pour des sites Wordpress ou Prestashop). On a une VM qui héberge sur aapanel 2 sites ecommerce et qui a un problème : On a intégré vendredi dernier Sendinblue sur 1 site pour envoyer les mails liés aux commandes. Cela fonctionne avec Postfix. Mais les crédits du client (20 000 emails) sont partis en 24h. Et depuis aucun email ne part du site, même s'il continue à fonctionner. Cette mission est urgente, ilfaudrait paramétrer correctement le serveur pour que cela refonctionne. Par ailleurs, il se trouve que j'ai très réguli&egra...

...missions. PROFIL De formation Bac +3 minimum en Administration Système Linux, vous bénéficiez idéalement d'une expérience similaire de 2 ans. Compétences requises : - Maîtrise de l'environnement Linux (Debian et Centos) - Programmation, script et automatisation (perl, php, bash) - Maîtrise de l'environnement Web (Nginx, Apache…) - Maîtrise serveurs de bases de données (MySQL & PgSQL) - Maîtrise de Postfix, Dovcot, Spamassassin, Bind, pureftpd .. - Bonne connaissance des environnements de virtualisation (Lxc, KVM) - Bonne connaissance de panneaux de contrôle tels que cPanel, Ispconfig, Plesk - Capacité à administrer des systèmes sécurisés - ...

Le serveur physique à maintenir intègre : 2 IP Failover pour accès à 2 serveurs virtuels - Un serveur virtuel DNS 1 + Postfix. - Un serveur virtuel WEB + mySQL. Le projet consiste à : - surveiller les services Apache/mySQL/Mail/Postfix. - intervenir en cas de panne d'un service pour le redémarrer. - répondre à nos questions (1 par mois en moyenne). Budget mensuel = 50€. Nous attendons vos questions et propositions avec attention. Merci.

Instalation d'un serveur de mail complet sur VPS OVH - Centos - Postfix Mysql avec posfix admin (avec config autorepondeur) - Réglage Smtp slow (orange, yahoo, etc...), fichier "transport" - Roundcube (avec plugin changepassw autorepondeur) - Phpmyadmin - Opendkim (avec les clefs dans le répertoire /etc/opendkim, pas d'instal fantaisiste) - Spamassassin Clamav - Config d'iptables - Fail2ban - Let's Encrypt serait un plus pour Roundcube et Postfixadmin - Config IPV 4 et 6

...intermittente. Le SMTP, de son côté, fonctionne mieux lorsque les machines qui envoient et reçoivent les messages sont interconnectées en permanence. Le logiciel Sendmail est l'un des premiers, sinon le premier serveur de messagerie électronique à utiliser SMTP. Depuis, la plupart des clients de messagerie peuvent utiliser SMTP pour envoyer les messages. Certains nouveaux serveurs sont apparus, comme Postfix, Qmail de Daniel J. Bernstein, Exim et Exchange de Microsoft. Comme le protocole utilisait du texte en ASCII (7 bits), il ne fonctionnait pas pour l'envoi de n'importe quels octets dans des fichiers binaires. Pour pallier ce problème, des standards comme MIME ont été développés pour p...

...fournisseur, a installer sur notre infrastructure. - Nous pensons à une infrastructure avec en amont un répartiteur de charge, tel que Haproxy configurer pour le SMTP, et un par feux applicatif afin de bloquer les attaques. - Une seconde machine avec uniquement PostfixAdmin, afin de créer les comptes SMTP pour nos différents utilisateurs pour des authentifications séparées - un pool de machine avec Postfix, Dovcot, SALS, etc..., connecter a travers une base MySQL externe a ce projet afin de centraliser les informations d'authentification. - Une nouvelle machine avec si possible un tableau de bord afin de suivre les envoie des emails en fonction du compte SMTP. Nous souhaitons travailler sur des VPS de type OpenVZ, qui sont des...

Bonjour, j'ai un serveur debian j'ai seulement installer postfix dessus pour permettre d'envoyer des emails à partir de mon site. Mais je ne peux pas envoyer de mail à partir de mon site et je ne c'est pas pourquoi je ne sais pas si ça vient du serveur ou du site. Donc je veux quelqu'un qui puisse me résoudre ce problème et une fois le problème résolue me faire un tuto dans un document .txt pour savoir comment résoudre ce problème. Je paye seulement si le problème est résolue alors si vous pensez pouvoir le résoudre je suis à votre écoute.

Bonjour, j'ai un serveur debian j'ai seulement installer postfix dessus pour permettre d'envoyer des emails à partir de mon site. Mais je ne peux pas envoyer de mail à partir de mon site et je ne c'est pas pourquoi je ne sais pas si ça vient du serveur ou du site. Donc je veux quelqu'un qui puisse me résoudre ce problème et une fois le problème résolue me faire un tuto dans un document .txt pour savoir comment résoudre ce problème. Je paye seulement si le problème est résolue alors si vous pensez pouvoir le résoudre je suis à votre écoute.

Mise en place de serveurs de routage emailing avec backup, DKIM, SPF, DMARC, Postfix multi-instance, Rotation-IP, sécurisation. Un serveur mailing clé en main. Expert Only.

Mise en place de serveurs de routage emailing avec backup, DKIM, SPF, DMARC, Postfix multi-instance

Etude de faisabilité d'un projet de mise en place d'un email hub (1 heure environ) : Configuration très spécifique: - Remailing (changement envelops et headers) - ACL: blacklists per users - Dynamic recipients - Plusieurs limites du nombre total de recipients par mois

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...nouveau serveur de mail déjà installé, je recherche quelqu'un capable de terminer la configuration du nouveau serveur de mail qui tourne sous Debian 8. Il y a déjà Postfix, Dovecot, Amavisd, SpamAssassin, Dspam, Policyd2 installé. Le serveur de mail à l'heure actuel ne peut envoyer que des mails aux adresses du domaine malgré un champ SPF déclaré sur la zone DNS. J'ai besoin de quelqu'un de FRANCAIS pour faire un point sur Skype avant, pendant, et après projet. Il faut impérativement respecter et répondre aux besoins : - Installer deux certificats de type SSL ( et ) - Configurer Postfix et Dovecot pour une communication en IMAP SSL et SMTP SSL. Actue...

Problème de mails sur serveur Ubuntu, Mon serveur n'envoi plus de mails et je pense que c'est un souci lié à une configuration de Postfix

Problème postfix n'envoie plus de mail sur mon serveur ubuntu Je cherche quelqu'un pour me régler le souci Hébergement nom de domaine 1&1 hébergement serveur dédibox Me faire des propositions Eric

We need from Pakistan or India. We need for guidance. • Complete server hardening and best-practice mail stack installation (Postfix or Exim, Dovecot, SpamAssassin, etc.). • Proper DNS records—SPF, DKIM, DMARC, rDNS—set up and verified. • IP and domain warm-up plan to protect sender reputation. • Web-based dashboard or lightweight MTA/ESP front-end that lets me import lists, create campaigns, schedule sends, and view real-time stats. • Step-by-step documentation so I can replicate or maintain the configuration without outside help. If you prefer working with a particular control panel (MailWizz, Interspire, Postal, Mailcow, CPanel/WHM), let me know; I’m flexible as long as deliverability remains the priority. Please outline you...

My Magento store was migrated to a Hostinger VPS and, ever since the move, no “Order Confirmation” messages reach customers or my own business inbox. I’m routing mail through a third-party provider such as Gmail/SendGrid, but I’m unsure whether the settings were carried over correctly during the migration, or whether something deeper in Magento, postfix/Exim or the VPS firewall is blocking outbound traffic. Or is an SMTP issue where a free extension needs to be added to Magento? Hostinger support has already reviewed their side; I can forward the full chat transcript for context. What I need now is a clean, provable fix inside Magento and on the server so every new order triggers a confirmation email without fail. Acceptance criteria • Order placemen...

...email confirmation are both fine, so choose whichever combination gets us approved fastest. • Configure production-ready sending limits and the correct sending pool to sustain the 50 k-per-day volume without throttling. • Build the required IAM policies, SMTP credentials and verified identities, then walk me through where to store them safely. • Set up the SMTP endpoint and show me sample cURL / Postfix / Node or PHP snippets so I can trigger campaigns directly through the SES SMTP API. • Apply essential deliverability best practices: SPF, DKIM, DMARC, feedback loops, dedicated IP (if needed), and relevant sending rate adjustments. I don’t need integrations beyond AWS SES itself—once the SMTP endpoint is live and tested, I’ll plug it into my...

We will create a new VM at KVM 6 portal to install Postfix and Dovecot for inbound and outbound emails. We will use SSL and spam security No programming needed.

Hello: I was trying to clone one email server for installation at a different VPS. I think you can help me better and much faster with low budget. You will create a new VPS by using our KVM 6 VM You can install Postfix alone or use webmin and we use postfix You will connect Dovecot with post fix and activate SSL You will confirm inbound and outbound mail delivery We will make sure spam box is working as well. (AI by Freelancer) What I expect from you • Install and configure Postfix for SMTP submission and relay with authentication • Install and configure Dovecot so users can retrieve mail via IMAP and/or POP3 (whichever you recommend for reliability) • Enable SSL/TLS throughout, ideally with an automatic Let’s Encrypt certificate &bu...

I run a Linux server on Hetzner with CyberPanel and need an...(no 550 errors, passes Google Postmaster tools). 4. Deploy Snappy webmail under its own sub-domain with valid SSL so users simply visit https://webmail.example.com. 5. Hand over a brief summary of changes plus any commands or panel paths so I can repeat the steps later. 6. I’m open to occasional future maintenance, so keep the configuration clean and document anything custom. CyberPanel, Postfix, Dovecot, Let’s Encrypt, and Hetzner’s DNS console are already in place; feel free to bring whatever tools—dig, nslookup, mail-tester, OpenSSL—you prefer. I consider the job complete when a test message lands in Gmail’s inbox without warning, Outlook syncs flawlessly, and webmail opens o...

I am looking to hire a cold email professional who already operates their OWN warmed sending infrastructure, including: Your own warmed domains Your own warmed IPv4s Your own SMTP/PMTA/MailWizz/Postfix servers Your own rotation system (domains + IPs) Your own deliverability setup (DKIM, SPF, DMARC, rDNS, etc.) I am NOT looking for someone who uses Instantly, Smartlead, Mailgun, SendGrid, AWS SES, or any cloud ESP. I am ONLY interested in professionals with a private, fully warmed system that is ready to send immediately. Requirements: Must send from your warmed domains (not mine) Must use your warmed dedicated IPs (not shared SMTP junk) Must have a working sending system already ready Ability to send 50,000 cold emails per day (5 days a week) 1 million per month Strong i...

...PDF / JSON Auto GST filing (optional, owner-controlled) E-WAY BILL Manual-assist mode (default) Official API support (optional) Generate / cancel / track CHEQUE PRINTING CTS-2010 compliant Multi-bank templates Alignment settings Cheque issue log MOBILE INTEGRATION Upload invoice photos from mobile via local Wi-Fi Attach images to invoices FINANCIAL / ACADEMIC YEAR FY-wise data separation Prefix/postfix change on FY change FY change confirmation 5-day grace period before FY lock Auto-lock after grace Quotations editable across FYs Hidden emergency override for locked FY (owner only, fully audited) BACKUP & RESTORE Auto backup (configurable interval) Maintain last 3 verified backups Delete old backup only after verification Automatic email backup Restore preview before applying...

I have a FreeBSD 14.3 VPS and I’m ready to carve it into three Bastille jails, each sitting on its own public IPv4 address. )Two of those jails will run PowerDNS, the third will host Postfix. I will install that myself.) All three must be able to speak to one another and to the FreeBSD host itself because the databases they rely on will live on the host. Here’s the outcome I expect: • Bastille correctly installed and configured on the VPS. • Three jails created and started, each bound to its assigned public IP and reachable from the internet as well as from the host and sibling jails. • Internal networking (loopback pair, bridge, or other clean method) so jail-to-jail and jail-to-host traffic never leaves the box. • Any PF or ipfw rules, sysct...

I need help resolving an issue with Postfix on my Linux server. Currently, emails are not being delivered. Ideal Skills and Experience: - Strong experience with Postfix - Familiarity with Linux server management - Knowledge of mail logs and DNS records - Troubleshooting skills for email delivery issues

...frontend starter Backend structure Agent (panel ↔ server) concept Draft installation scripts Full technical PDF Your mission is to complete, stabilize, and secure the panel. Target systems Ubuntu 20.04 / 22.04 AlmaLinux 8 / 9 VPS & Dedicated servers Main features Server monitoring & service control (Nginx, PHP-FPM, MariaDB, Docker) Multi-domain & multi-user hosting DNS (BIND) & Email (Postfix / Dovecot) Let’s Encrypt SSL (automatic) Firewall & Fail2ban Secure Agent Token system Root panel + client panel Modern cPanel-like interface Deliverables Fully working hosting panel Secure install scripts (Ubuntu & AlmaLinux) Clean source code (ZIP) Basic documentation (English) Important rules no chatgpt No external branding or ...

I have a FreeBSD 14.3 VPS and I’m ready to carve it into three Bastille jails, each sitting on its own public IPv4 address. )Two of those jails will run PowerDNS, the third will host Postfix. I will install that myself.) All three must be able to speak to one another and to the FreeBSD host itself because the databases they rely on will live on the host. Here’s the outcome I expect: • Bastille correctly installed and configured on the VPS. • Three jails created and started, each bound to its assigned public IP and reachable from the internet as well as from the host and sibling jails. • Internal networking (loopback pair, bridge, or other clean method) so jail-to-jail and jail-to-host traffic never leaves the box. • Any PF or ipfw rules, sysct...

...existing WordPress website (including database) from another host/server. This is a practical, execution-focused task. The selected freelancer will be required to work directly on our systems, including access to: VPS (Linux) cPanel DNS / Domain settings Other relevant company resources required to complete the task Scope of Work 1. SMTP / Mail Server Setup Install and configure SMTP server on VPS (Postfix / Exim or equivalent) Configure hostname & reverse DNS Setup SPF, DKIM, DMARC Ensure proper email deliverability (avoid spam) Secure configuration (no open relay) Test successful email sending & receiving Enable email account creation 2. WordPress Migration Transfer WordPress website from existing host/server to VPS Migrate complete database and files Ensure site run...

I am looking to hire a cold email professional who already operates their OWN warmed sending infrastructure, including: Your own warmed domains Your own warmed IPv4s Your own SMTP/PMTA/MailWizz/Postfix servers Your own rotation system (domains + IPs) Your own deliverability setup (DKIM, SPF, DMARC, rDNS, etc.) I am NOT looking for someone who uses Instantly, Smartlead, Mailgun, SendGrid, AWS SES, or any cloud ESP. I am ONLY interested in professionals with a private, fully warmed system that is ready to send immediately. Requirements: Must send from your warmed domains (not mine) Must use your warmed dedicated IPs (not shared SMTP junk) Must have a working sending system already ready Ability to send 50,000 cold emails per day (5 days a week) 1 million per month Strong i...

I am looking to hire a cold email professional who already operates their OWN warmed sending infrastructure, including: Your own warmed domains Your own warmed IPv4s Your own SMTP/PMTA/MailWizz/Postfix servers Your own rotation system (domains + IPs) Your own deliverability setup (DKIM, SPF, DMARC, rDNS, etc.) I am NOT looking for someone who uses Instantly, Smartlead, Mailgun, SendGrid, AWS SES, or any cloud ESP. I am ONLY interested in professionals with a private, fully warmed system that is ready to send immediately. Requirements: Must send from your warmed domains (not mine) Must use your warmed dedicated IPs (not shared SMTP junk) Must have a working sending system already ready Ability to send 50,000 cold emails per day (5 days a week) 1 million per month Strong i...

I need a properly configured SMTP server that can handle up to 10,000 outgoing messages per day for bulk-email campaigns. At this stage I’m not tying it to Mailchimp, a CRM, or any other platform—I simpl...recommend for a sender of this size. Deliverables • Fully operational SMTP service reachable over standard ports • Authenticated sending domain with SPF, DKIM and DMARC in place • Test report confirming inbox delivery with no major blacklists triggered • Quick setup guide or screencast so I can change passwords, add users and monitor logs on my own If you have past experience deploying Postfix, Exim, PowerMTA or similar for low-to-medium volume senders, that’s exactly what I’m after. Please outline the stack you’d use and...

...preserved (LDAP/MMR involved) NG modules, LDS licensing (v3 license) Tasks may include: Review migration approach (9 → 10 Daffodil) LDAP / domain / hostname validation Zimbra proxy & services troubleshooting License (LDS) validation and migration checks Mail flow (Postfix, DNS, DKIM/SPF/DMARC) Answering specific technical questions during migration Required experience: Strong hands-on experience with Zimbra 8.8 / 9 / 10 LDAP / MMR knowledge Understanding of NG modules and LDS (Zimbra 10 licensing) Linux (Ubuntu / RHEL / Oracle Linux) Postfix & mail routing Nice to have: Proven experience with Zimbra migrations Experience with Zimbra Daffodil (10.1.x) Consulting / troubleshooting background Engagement: Short-term / hourly Initially 3–5 hours (may exte...

Gmail keeps bouncing my messages with the dreaded “550-5.7.26 This mail is unauthenticated” notice. I send through a Postfix server and manage all DNS zones inside DigitalOcean’s control panel. I already know the problem: my domain lacks working SPF and DKIM records. I need an expert who can generate the correct tokens, publish them in DigitalOcean DNS, and tie everything back into Postfix so Gmail finally recognises the messages as authenticated. Scope of work • Create or repair one SPF record that aligns with my current sending path. • Generate a DKIM key pair, add the TXT record in DigitalOcean, and wire it up to Postfix (OpenDKIM or equivalent). • Verify both records with common testing tools (Google Postmaster, dig, etc.)...

My production mail server runs on Debian and every main layer—Postfix, Zimbra and the Kernel—now needs to move to the latest stable releases. All three components must come through the process with complete data integrity, so the job starts with a solid backup plan: at the moment no backup exists and I will rely on you to design, create and test one before any package is touched. Once the safety net is in place, the work continues with a carefully staged upgrade. Postfix, Zimbra and the Kernel should be brought up to date, followed by migration to the current Debian stable. I expect minimal downtime, full preservation of mailboxes, calendars, contacts, aliases and logs, and a short verification window after each major step to catch issues early. The assignment i...

I’m looking for someone who can physically come to our New Delhi office—remote work is not an option—to take charge of an u...configuration, and handle a full upgrade-and-migration cycle to new hardware without disrupting mail flow. You’ll be expected to arrive on-site, review the existing Ubuntu environment, adjust any misconfigurations, migrate data and user accounts cleanly, then validate that everything functions exactly as before—or better—once the cut-over is done. Solid knowledge of Ubuntu server administration, Postfix/Dovecot, DNS, SSL/TLS and mail security best practices will be essential to get this wrapped up quickly. If you’re available to start immediately in New Delhi and can demonstrate hands-on experience with Mobodoa at t...

...notification emails every day. I want to keep costs down without sacrificing inbox placement, so the solution must include solid spam filtering, real-time email tracking with usable analytics dashboards, and the ability to trigger automated responses such as application-received or interview-scheduled messages. I’m open to cloud services (Amazon SES, Mailgun, SendGrid, etc.) or a self-hosted stack (Postfix, Exim, Mailcow, or similar). What matters is that the final setup: • Sends >10k emails daily with stable throughput and high deliverability • Provides built-in or easily integrated tracking & analytics for opens, clicks, and bounces • Supports basic autoresponder logic for common job-site events • Filters out spam to protect domain reput...

..."Enterprise" editions. It must be the Community/Open-Source edition only. Scope of Work & Technical Requirements: 1. Infrastructure & OS: o Deploy on on-premises Linux infrastructure (e.g., Ubuntu LTS). o Optimize OS kernel and file systems for high I/O performance (2000+ concurrent users). 2. Software Stack (Strict FOSS Policy): o Must use a fully open-source stack (e.g., Mailcow, SOGo, or a custom Postfix/Dovecot stack). 3. Outlook Compatibility (The Critical Requirement): o Must implement Open Source ActiveSync (e.g., via SOGo, Z-Push, or Grommunio Community) to ensure two-way sync. o Outlook: Users must be able to use Outlook (Desktop) to sync Email, Calendar, and Contacts without purchasing third-party plugins. 4. Webmail & Collaboration: o Deploy a mod...

I have an Ubuntu-based VPS that I want to turn into a reliable mail-sending host using Postfix. The instance is fresh; nothing has been installed yet, so you’ll be starting from a clean slate. The only protocol I need exposed is SMTP—no IMAP or POP3 boxes to manage—just rock-solid outbound and relay capability. Alongside the core Postfix install, I want every standard security measure baked in: TLS certificates for encrypted transport, proper SPF and DKIM records generated and tested for my domain, plus concise firewall rules that leave only the required ports open. Deliverables • Postfix installed and sending test messages successfully over SMTP • Valid SSL/TLS configuration (Let’s Encrypt is fine) • SPF and DKIM records ...

...Overview We are looking for a skilled Penetration Tester with specialized expertise in email server security to conduct thorough assessments of our email infrastructure. The ideal candidate will identify vulnerabilities in SMTP, IMAP, POP3 servers, and associated email security mechanisms. Key Responsibilities • Conduct comprehensive penetration testing on email servers (SMTP, IMAP, POP3, Exchange, Postfix, Sendmail) • Test email authentication mechanisms including SPF, DKIM, DMARC, and DANE implementations • Identify and exploit vulnerabilities such as open relays, SMTP injection, user enumeration attacks • Assess email encryption implementations (TLS/SSL, S/MIME, PGP) • Perform phishing simulation and social engineering tests targeting email users &bull...

My Webmin / Virtualmin mail server was running smoothly until I had to reinstall Postfix. Since then, messages are bounced or never show up because the two core services are tripping over file-system restrictions: • Dovecot is throwing file and folder permission errors whenever it tries to reach users’ maildirs. • Postfix will no longer accept incoming mail, clearly a permission-related failure. I need a clean overhaul of user, group and directory rights so that both services can coexist again without rejecting or losing mail. The job is finished when: 1. Dovecot reads and writes every mailbox without permission warnings in the logs. 2. Postfix reliably receives external messages and hands them off to Dovecot. 3. Test messages in and out comple...

...jobs, and performance optimization. Multi-user system with custom roles and permissions, fully isolating users’ contacts, lists, campaigns, and reports. Per-user sending quotas/credits with daily/monthly/total limits, auto-throttling when limits are reached. Assignment of individual SMTP settings per user, supporting multiple SMTPs while maintaining deliverability. Complete SMTP server setup (Postfix/PMTA) with Dovecot IMAP and optional Roundcube webmail; email headers show only sender domain and sending IP. DNS configuration including SPF, DKIM, DMARC, MX, reverse DNS, and deliverability monitoring; bounce/complaint handling included. Testing of sending, quotas, SMTP, DNS, and deliverability; validation that no server hostname or internal IP appears in email headers....

...email infrastructure engineer to design and configure a high-deliverability outbound email system for our SaaS platform. The project involves setting up a Dallas-based Postal + Postfix architecture using Ubuntu 24.04, MariaDB, Nginx, and dedicated IPv4 pools. You will configure Postal Inbound (API only), Postfix routing with provider-based IP pools (Microsoft, Google, Other), and Postal Outbound for SMTP delivery. Optimizing deliverability, SPF/DKIM/DMARC, PTR records, warmup schedules, and IP reputation management is essential. You must have hands-on experience with high-volume transactional email, multi-IP Postfix configurations, Microsoft 365 deliverability, DNS authentication, SMTP routing logic, queue management, and Linux server hardening. Familiarity with Doc...

Hiring an experienced professional to install MailWizz or Acelle, configure SMTP integration, and deliver strong, reliable email deliverability. Requirements: - Install & configure MailWizz or Acelle - Set up SMTP (Postfix, Exim, or PowerMTA) - Configure SPF, DKIM, DMARC, rDNS - Integrate SMTP with mailing app and perform delivery tests - Optimize inbox placement and overall sending performance - Strong expertise in SMTP/MTA configuration, DNS authentication, and deliverability management Engagement: One-time setup with potential for ongoing support on emergent issues, with quick response and efficient resolution.

Hiring a skilled professional to install MailWizz or Acelle, configure SMTP (Postfix / Exim / PMTA), implement SPF, DKIM, DMARC, rDNS, and deliver a fully optimized, high-deliverability sending environment. One-time setup with the option for ongoing support.

Hiring: Senior Systems Engineer — Build ISP-Level Email Filtering Prototype (Postfix, rspamd, Vault, AEAD) Remote • Contract (4–6 weeks) • Equity available We are building the first working prototype of , an ISP-level scam/spam/malware prevention system that moves message filtering away from user devices and into the provider network. A patent is filed, and now we need an expert engineer to assemble the prototype using commercial off-the-shelf components. What You Will Build A fully operational ISP-style email pipeline demonstrating: SMTP ingress (Postfix or Exim) Filtering (rspamd + ClamAV) Malicious quarantine inside ISP AEAD envelope encryption (AES-GCM or ChaCha20-Poly1305) Session key wrapping using Hashicorp Vault Provider-signed provenan...

...login/tenant for our long-term Microsoft 365 use. • Stand up Microsoft Teams in that tenant, including all required backend settings. • Create the first batch of user accounts (about a dozen) and verify their access. • Configure baseline Teams policies and permissions—messaging, meetings, and external access—so we have a secure, functional starting point. We currently run our own Linux Postfix server for our corporate email domain (). We will need to migrate users from that server to 365. I’m expecting this to be a short engagement—like a $150 starter package—so efficiency is key. If you know the admin portals, PowerShell shortcuts, and the typical pitfalls of multi-subscription environments, let’s connect and knock this ...

...several small client sites. Recently Postfix keeps launching, then immediately exiting, interrupting outgoing and incoming mail. I have not altered any server configs or installed new software, so something deeper is at play. I need someone to: • Inspect systemd-journal and Postfix logs, identify the root cause of the crash/restart cycle. • Apply the necessary configuration or package fix so Postfix starts cleanly and stays active. • Validate that mail flow works for all virtual domains managed by Virtualmin. • Provide a brief summary of what went wrong and the steps you took, so I can reference it later. - All emails must stay safe and intact. SSH root access and Webmin credentials are ready as soon as we start. If you are comfortable tr...

...Review the existing rule set, then create a clean group of rules that closes unnecessary ports while keeping web, SSH and mail services functional. • Tidy up filter policies that tie into the DNS Resolver, add the correct DNS reflection settings for internal hosts, and be sure split-DNS look-ups resolve exactly the same from inside and outside the network. • Re-establish outbound mail on Poste (postfix/SMTP 587) and verify IMAP/POP login is restored. Right now we can receive mail but cannot send, and the web-login is disconnected. • Publish and propagate the proper MX records so external lookups stop failing with the “No MX records found” error. The job is complete when: 1. pfSense passes traffic only on the intended ports and DNS queries resolve...

...Audit Log, SEO fields, IP allowlist Note: No off-the-shelf CMS/services (Strapi, EmailJS, etc.). All source code belongs to us; deployment runs on OVH. • A custom admin panel that lets me create, read, update, and delete Products, Blog posts, and captured Leads. • Self-hosted database, backend, and file storage—those three pieces must live on my infrastructure. • A self-hosted mail service (Postfix, Mailhog, or similar) to take over all outgoing email tasks previously handled by EmailJS. • Migration scripts or utilities that move the existing Strapi content and files into the new stack without data loss. ""Scope / Tasks 1) Backend (Self-Hosted) Public API (+ admin API if needed), REST (GraphQL optional) RBAC: Admin / Editor / Viewe...