Troubleshoot and Fix Debian Mailing System

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@seefattechnologi

Hello!==>>I can take on this investigation and work through it systematically to restore your ship–shore mail flow. I’ll start with a focused audit of the entire SMTP chain on both ends—ship-side Perl handoff, Iridium transport, and Kerio Connect processing—to isolate exactly where messages are stopping.

@vili1977

Hello. I would like to help you with fix email issue on Debian server, I have experience. Please read my feedbacks. Thank you.

@bindmission

Hello, I have 10 years of experience in troubleshooting and fixing Linux-based mailing systems, including Debian. I am proficient in SMTP diagnostics, log analysis, and Perl scripting and familiar with Kerio Connect configurations. I propose to remotely investigate the issue to identify the mail flow disruption, implement a fix, and provide a report with detailed findings and solutions. I am confident in restoring your ship's email service promptly. Regards, VishnuLal NB*

@teodorgeorge

Hello, I can help trace the full ship-to-shore mail path and find where it stopped, whether that is Debian queues, Perl hand-off scripts, SMTP/auth, Kerio firewall behavior, or the shore-side mail server logs. I have solid experience troubleshooting Linux mail flow with log review, live test messages, queue checks, and clear fixes that restore service without making unnecessary changes. I will focus on identifying the exact break, applying the safest fix or giving you precise steps to apply, and then summarising the root cause and prevention notes once bidirectional mail is confirmed. I am ready to begin immediately and would be happy to discuss the project in further detail. Thanks, Teo

@Herculesz

Hi I can investigate the full ship-to-shore mail flow and pinpoint exactly where the bidirectional delivery is breaking. The main technical challenge is that the failure could sit anywhere between the Debian Perl hand-off scripts, local mail queue, Iridium modem interface, SMTP authentication, Kerio Connect firewall rules, or the shore-side mail server logs. I would approach this by tracing test messages step by step, reviewing Linux mail logs, Perl script output, SMTP transactions, Kerio Connect logs, firewall behavior, and server-side queues. I have strong experience with Linux/Debian administration, SMTP diagnostics, mail server troubleshooting, firewall review, log analysis, Perl-based automation, DNS checks, and remote production issue resolution. I can verify whether the shore server still accepts mail from other sources, confirm whether the vessel traffic is being rejected, delayed, queued, or blocked, and isolate the exact point of failure. Once identified, I can either apply the fix directly or provide clear commands/configuration changes you can safely run. I’ll also provide a short root-cause report with the issue, fix, and prevention notes. Thanks, Hercules

@myGigs

Good afternoon. I'll remotely diagnose your Debian and Kerio Connect mail chain by reviewing SMTP logs, tracing the queue, testing bidirectional delivery, and checking firewall rules to pinpoint exactly where the break is. Once found, I'll apply the fix and deliver a concise root cause report so you can prevent a recurrence. Any specific deadline I should work around?

@jcrbahia

Your setup relies on Perl scripts handling SMTP via Iridium with Kerio Connect as the firewall—classic maritime mail flow that should log every hand-off. Let’s isolate where messages stall. - I’ll start by tracing a test message through mailq, exim -d (or your MTA’s equivalent), and Kerio’s SMTP logs to confirm whether the break is pre-firewall, at auth, or in queue processing. Perl script logs will show if the Iridium hand-off even triggers. - For the firewall, I’ll verify Kerio Connect’s rules for the ship’s IP (temporary whitelisting if needed) and check for silent drops with tcpdump on port 25/587 during a test send. - If logs point to queue corruption or stalled processes, I’ll force-flush and reprocess with exim -qff (or equivalent) and validate the Perl scripts’ error handling—common culprits after long uptimes are stale locks or full /var partitions. I’ll deliver a fix or actionable steps within 7 days. The €500 covers the scope as written; we’ll refine the figure once we walk through the logs and rule out edge cases like Iridium’s hidden rate limits. A 15-minute call will let me clarify the MTA version and Kerio’s current rule set before diving in.

@solutionsplayers

Hello, Your setup didn’t “slow down” — it fully stopped both inbound and outbound mail flow, which usually means a break in SMTP routing or Kerio Connect handling, not the Iridium link. I have 8+ years of experience in Linux systems, SMTP diagnostics, mail queue debugging, Perl-based automation, and end-to-end mail flow troubleshooting. Your requirement is clear: Debian-based ship system using Perl scripts + Iridium modem + shore-side mail server behind Kerio Connect, and you need full bidirectional email restored with root-cause identification. I can investigate logs across both ends, trace SMTP handoffs, verify queues, isolate firewall/auth issues, and pinpoint exactly where the chain is breaking. I can start immediately and provide continuous updates while debugging until mail flow is fully restored and verified both directions. Thanks! Best regards

@rbtech1984

Hello There!!! ★★★★ ( Debian and Kerio mail-flow troubleshooting with SMTP diagnostics and Perl hand-off analysis ) ★★★★ I carefully reviewed your issue and understand the existing ship-to-shore mailing setup has been stable for years before suddenly failing in both directions. Since the Iridium link, DNS, and reboots have already been verified, the problem likely sits within SMTP flow, Kerio filtering, authentication, queue handling, or the Perl-based transfer process. ⚜ Debian & Linux Mail Troubleshooting ⚜ Kerio Connect & SMTP Diagnostics ⚜ Mail Queue & Log Analysis ⚜ Perl Script Flow Investigation ⚜ Firewall & Authentication Checks ⚜ Remote Debugging & Recovery ⚜ Root Cause Reporting & Prevention Notes I’ve worked on Linux server administration and mail infrastructure debugging involving SMTP relays, authentication failures, firewall conflicts, and stuck queue issues. My approach would be systematic: trace outgoing/incoming flow, inspect logs in real time, validate SMTP sessions, test delivery routes, and isolate exactly where communication breaks. I also make sure fixes are documented clearly for future reliability. I’d be glad to help restore the full mail flow between ship and shore as quickly and safely as possible. Warm Regards, Farhin B.

@intelliresponse

Hi, I understand your vessel has a long-running Debian/Perl-based Iridium mail relay, but now both inbound and outbound mail have stopped despite the Iridium link, DNS, and reboots being verified. The likely break could be on the Kerio Connect side, SMTP auth/session handling, firewall/NAT rule, mail queue, TLS/certificate issue, or the Perl hand-off path. I have strong experience troubleshooting Linux mail flow, SMTP diagnostics, Kerio/mail-server logs, firewalls, queues, and legacy script-based integrations. I can remotely trace the full path using logs, telnet/openssl SMTP tests, test messages, queue inspection, and Perl hand-off review. I will identify the exact failure point, implement the fix or provide clear commands/config steps, then deliver a short root-cause report with prevention notes. Once bidirectional ship-to-shore mail is confirmed, the task is complete.

@rainsys

As a seasoned web engineer with over 10 years of experience, I have honed exceptional problem-solving skills that are indispensable in troubleshooting complex technical issues such as the one you're facing with your Debian mailing system. I specialize in fixing bugs and technical issues, employing my PHP expertise to ensure efficient, reliable solutions that stand the test of time. Coupled with my skills in log analysis and web diagnostics, I am confident that my diagnosis and resolution strategies will be fast and accurate. In addition to my technical mastery, I am known for my commitment to thoroughness and clarity. My approach to every project is focused on delivering comprehensive solutions along with concise documentation -precisely what you need to avoid future recurrences of this particular issue. And as you place a high value on effective communication via this project's 'brief report', let me assure you that you'll have a complete summary outlining not just the root cause but every single step taken toward its resolution.

@toriquldev123

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@BarryCrouch

Hi, A Debian mail pipeline that worked perfectly for a decade then suddenly stopped - with the Iridium link healthy, DNS resolving, and no config changes. That tells me the break is likely in the Kerio Connect firewall or the mail server's perception of the ship. I'll trace the full path: SMTP conversation logs from both sides, queue inspection on the Debian machine, Perl script hand-off points, and Kerio Connect acceptance rules. If the server rejects or silently drops the ship's traffic, I'll find the exact condition - bad HELO, reverse DNS mismatch, TLS version drift, or a firewall rule that shifted during an update. Once identified, I'll apply the fix or give you commands to run. You'll get bidirectional mail flowing again and a short root-cause report so this doesn't repeat. Expect me to test with synthetic messages from the ship to shore and shore to ship, confirming each hop before declaring done. I'll also leave you a one-line health check script that emails you daily with "mail path OK" - so you know the moment anything drifts again.

@ashinnd84

Hello there, we are a team of developers and we can do this project in no time. Thanks Ashish Kumar.

@royalrandhawa

I can definitely handle this. I have experience working with Linux based backend systems, network level troubleshooting, mail flow analysis, automation scripts and production environments where stability matters more than “theory”. Since the system worked for years and suddenly stopped without config changes, this is very likely a flow break caused by queue issues, SMTP/auth problems, firewall behavior, certificate expiry, DNS edge case or service level failure somewhere in the chain. The important thing here is tracing the exact point where the chain breaks instead of randomly changing configs and making things worse.

@codefusion53

Hi, I can help diagnose and restore your ship-to-shore email system quickly. I have strong experience with Debian and Ubuntu servers, SMTP troubleshooting, Kerio Connect, firewall analysis, Perl-based mail workflows, and end-to-end message tracing. Given that the Iridium link and DNS are functioning, I would systematically test each stage of the mail path: Perl hand-off, local mail queue, SMTP authentication, Kerio Connect logs, firewall behavior, and message routing on both inbound and outbound paths. I can determine whether the issue is caused by authentication changes, queue corruption, blocked IPs, expired certificates, firewall rules, or server-side delivery failures. Once the root cause is identified, I will implement the fix or provide immediate step-by-step instructions if direct access is limited. I will also deliver a concise report summarizing the issue and the corrective actions taken. My goal is to restore reliable bidirectional mail flow with minimal disruption and clear documentation to prevent recurrence. I would be glad to help get communications running again and will gratefully accept your feedback throughout the investigation. Best, Justin

@Muhammadzeesha59

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@iimtpradeepdash

Hi! The way your mail link just stopped in both directions after years of smooth running tells me the break is likely subtle, not some basic config slip. The Perl handoff and Kerio Connect in front of your mail server add a few unique corners to check — I’ve had to troubleshoot a similar Linux mailflow break (Kerio gateway plus custom mail scripts) on a logistics client’s overseas system last year. Here’s how I’d dive in: I’ll connect, review logs end to end, run test SMTP to and from both sides, and spot where flow stalls. I’m comfortable reading Kerio Connect’s logs and have untangled old Perl relay chains before. A quick question: is either end set to auto-update packages, or is everything locked old-school? Sometimes a quiet system update on Perl or Exim knocks out these legacy links. Happy to start with a free mailflow trace writeup — quick bullet-points of what’s healthy, what’s broken. You can also see some Linux and mailserver jobs at work.techindika.com. — Pradeep