Optimize Proxmox Mail Gateway

@AZTURK1

Configuring Proxmox Mail Gateway upstream of Postfix requires balancing aggressive RBL and SpamAssassin thresholds against false positives, alongside strict TLS and alignment validation. Here is how I will handle the deployment: ✅ Full configuration backup snapshot of PMG and Postfix configs prior to making any rule modifications. ✅ Hardening PMG network and mail flow: enforced opportunistic/strict TLS, postfix rate-limiting, relay domain restrictions, and secure quarantine interface bindings. ✅ Spam and AV tuning: integrating curated RBLs (Spamhaus, Barracuda, SpamCop), tuning SpamAssassin custom rules/scores, setting selective greylisting, and expanding ClamAV with third-party signature feeds (e.g. Sanesecurity). ✅ Inbound/outbound authentication pipeline: end-to-end DKIM verification and signing, strict SPF/DMARC policy evaluation, and clean header handoff to the backend Postfix instance. ✅ Verification scans via MXToolbox and test spam suites (GTUBE/EICAR), followed by a clear changelog and threshold tuning guide. ✅ 10+ years production experience | 400+ completed projects | 320+ five-star reviews ✅ Microsoft® Certified: MCSA | MCSE | MCT & cPanel Certified (CWSA-2) Are you using a dedicated local DNS resolver (like Unbound or BIND) on or near the PMG instance to prevent public DNS rate-limiting on RBL queries? I can deliver this in 1 day for 30 USD and can jump on it right now.

@talhamq

As an experienced IT professional with a deep understanding and extensive experience within the domain of mail server, I believe I possess the exact skillset you are seeking for. I have not only dealt with Proxmox Mail Gateway but have also garnered expertise in its balancing act with Postfix on Linux. I am familiar and competent with PMG's GUI as well as CLI, along with the companions facilitating mail flow like SpamAssassin, ClamAV, RBLs, DKIM, SPF, and DMARC.

@zulqrn

Hi there, I have solid hands on experience in Proxmox Mail Gateway Servers and I would love to assist you. Please let me know a good time to discuss. Thanks

@sedawy

With over 15 years of experience as a DevOps & Cloud Engineer and a track record of driving digital transformation projects across multiple industries, I am uniquely qualified to tackle the optimization of your Proxmox Mail Gateway. My expertise covers a wide range of areas and includes securing network environments, delivering CI/CD pipelines, and implementing robust cloud security solutions amongst others. Not only will I ensure the Proxmox Mail Gateway passes an external security scan with no critical findings, but I will also configure it to apply current best-practice policies such as TLS, relay restrictions, rate-limiting, secure quarantine access and automatic updates. My thorough understanding of PMG will give me an edge in building an effective spam-filtering ruleset using SpamAssassin scores and integrating multiple real-time block lists to reduce false positives. Additionally, my proficiency extends to DKIM signing/verification, SPF and DMARC checks – important components for clean headers in Postfix. Your acceptance criteria aligns perfectly with my skillset: ensuring MXToolbox reports DKIM, SPF and DMARC alignment as “Pass,” effectively blocking test messages while allowing legitimate mail from popular domains. Lastly, my clear documentation skills will facilitate a concise changelog and one-page “next steps” guide for future tweaking. Let's make your systems faster, safer and smarter together!

@kumarashish99

Having spent several years specializing in backend development, DevOps engineering, and network administration, I am your go-to professional for optimizing your Proxmox Mail Gateway and implementing stringent security measures. My extensive knowledge of Linux systems combined with my experience with AWS, Security & Compliance, and CI/CD pipelines makes me the perfect match for this project. I'm no stranger to handling and fine-tuning mail flows with robust tools such as SpamAssassin, ClamAV, RBLs, DKIM, SPF and DMARC. My thorough understanding of PMG's GUI and CLI will ensure that your mail gateway is hardened with contemporary best practices including TLS policies, relay restrictions, and secure quarantine access. I'll also enable effective antivirus scanning using ClamAV to further fortify your system against threats. Transparency is a key aspect of my work and you can expect a concise yet comprehensive documentation outlining all the changes made plus a one-page 'next steps' guide post-completion. You can rest assured knowing that I'll be able to pass an external security scan with no critical findings and ensure DKIM, SPF and DMARC alignment via MXToolbox reports to improve the integrity of your Postfix headers. Let's join hands now to combat the spam menace effectively!

@naminghn

Hi there, I see you're looking to optimize your Proxmox Mail Gateway to effectively reduce spam reaching your inbox. Given my experience with mail servers and security protocols, I would implement best-practice hardening by configuring TLS policies, relay restrictions, and secure quarantine access for your setup. I'll also fine-tune your SpamAssassin settings, integrate multiple RBLs, and set up greylisting to enhance spam filtering while ensuring legitimate emails come through unscathed. Additionally, I’ll enable ClamAV for antivirus scanning and ensure DKIM, SPF, and DMARC are correctly enforced to provide clean headers for your Postfix server. I will document all changes made, including a concise change log and further steps for maintaining the setup moving forward. I’m ready to start immediately. Regards, Ali

@shayankhan333

As a seasoned software and system developer with extensive experience in areas very much related to this project like Linux, Network Administration, Performance Tuning, SMTP, and System Administration, I am confident that I am the best candidate for optimizing your Proxmox Mail Gateway. My solid understanding of PMG, its GUI and CLI, as well as other mail-flow components such as SpamAssassin, ClamAV, RBLs, DKIM, SPF and DMARC will be invaluable in delivering an optimized solution that dramatically reduces spam while ensuring legitimate emails are delivered smoothly. I've been actively working in the technology industry since 2018 with a track record of delivering over 120 successful projects. What sets me apart is my commitment to understand and align my work with client's business objectives. In line with this, my approach to your project will be no different. I assure you of not only accomplishing the outlined tasks but also going above and beyond to analyze your current systems and implementing future-proof solutions.

@tnowsolutions

I will create a clean, fully editable, and precise native Revit model by accurately modeling all architectural elements from your DWG while strictly aligning levels, grids, and geometry with your structural IFC. Using Autodesk Revit 2024, I ensure no automated conversions are used, delivering a fully coordinated, production-ready BIM model alongside a checked IFC export. I have extensive experience coordinating architectural Revit models against structural IFCs and high-detail DWGs, and I am happy to share portfolio examples of similar past deliverables upon request.