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  1. P

    [SOLVED] Finding the reason for "adding disclaimer failed"?

    Here is the disclaimer text. <!DOCTYPE html> <html lang="en"> <head> <title>Warning</title> </head> <body> <div style='border:solid #0000ff 2.0pt;padding:1.0pt 1.0pt 1.0pt 1.0pt'> <p style='background:#ff0000'> <span style='font-weight:bold;font-size:12.0pt;color:white'> &nbsp;Sender for this...
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    [SOLVED] Finding the reason for "adding disclaimer failed"?

    Hello, We added a new rule to our server so if the spam score is equal or higher then 2 it will add disclaimer as noted below. It is working on most messages but I just noticed that on message it failed to work properly. Can you give some advice how to find the reason why it failed to add the...
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    Possible to add Whitelist comments for Who Objects and Mail Proxy Whitelist?

    Hello. We added a lot of whitelist items and it's getting out of hand without any option to make comments. We would really like if there was an option to make a comment for each entry so we know for each whitelist for which company this whitelist is. You can't get that information if you are...
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    [SOLVED] Blocking mail via signer signerhash

    @Stoiko Ivanov and @hata_ph Thank you for your help. Looks like whoever send us this email mixed information and provided us invalid guidance what to do. Will marked this as solved.
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    [SOLVED] Blocking mail via signer signerhash

    It's not provided. We just got message from Microsoft with information provided above with multiple entries in CSV file. Snippet from email: "The Microsoft Threat Intelligence Center (MSTIC) is confidentially sharing the attached Activity Alert (AA) and CSV file of related indicators of...
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    [SOLVED] Blocking mail via signer signerhash

    Hello, Is it possible to block mail with this information provided. This was a request from Microsoft. Example of what we have to block: Bespoke Software Solutions Limited cba350fe1847a206580657758ad6813a9977c40ef signer signerhash Thank you!
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    Cannot start TLS: handshake failure

    @Stoiko Ivanov it kind of works if you use [mail.example.com]:25. The first type of errors dsn=4.7.5, status=undeliverable (Cannot start TLS: handshake failure) are gone. I still see this kind of errors: postfix/smtpd[1071]: connect from sender.server.com[1.2.3.4] postfix/smtpd[1071]: Anonymous...
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    Cannot start TLS: handshake failure

    @Stoiko Ivanov thank you for the clarification. I have done the grep the result is example.com smtp:[mail.example.com]:25 I have added this This should work but it does not for some reason. Tried restarting postfix service and tried adding different variation of destination without [ and with...
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    Cannot start TLS: handshake failure

    @Stoiko Ivanov Thank you for this. You are right it's an exchange server. I tired to add the domain to the TLS destination policy set to none but it's still the same. We already have the domain added in transports so everything sent to this domain in forwarded to their mail server. Tried to...
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    When FREEMAIL_FORGED_REPLYTO add Reply-To address notice in the message subject

    Hello, I would like to configure proxmox to add Reply-To address in the subject of the message if FREEMAIL_FORGED_REPLYTO or HEADER_FROM_DIFFERENT_DOMAINS is detected. I don't know if proxmox has access to this information when receiving emails. If this is not possible I would just like to add...
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    Cannot start TLS: handshake failure

    Hello, In the tracking center we are noticing Cannot start TLS: handshake failure errors for one domain only (mx records for this domain are pointed to our mail filter that filters mail and delivers mail to end mail server. Below examples from the log with removed customer info...
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    Bug Configuration: Mail Proxy - Whitelist - sender domain whitelist does not work

    Hello, Can someone try to replicate this by adding DNSBL Sites and then trying to Whitelist a domain (sender domain) and seeing if whitelisting works?. We are running the latest version 6.3-5. Make sure you restart postfix process otherwise the changes are not applied. There seems to be a...
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    command '/usr/bin/pmg-log-tracker got unexpected data

    Hello, If we try to search in the tracking center for more than a few hours back we get this error. Any advice how can we fix it? This was working fine just a few days ago. Is it possible that there is something in the log that is braking it like some from, to address with strange characters...
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    Notify receiver that someone is trying to send him a message but he is blocked (attach original blocked mail)

    @Stoiko Ivanov Thank you very much! Per your guidance I managed to make this work. I still have some questions about how things work (for example in which direction proxmox processes rules (probably from bottom (lower number) to the top as I can see) but I will figure it out on my own. I have...
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    Notify receiver that someone is trying to send him a message but he is blocked (attach original blocked mail)

    Thank you for some answers @Stoiko Ivanov but still unclear about what is actually possible. We understand that it might not seem smart to do what we are trying to do but we are just testing the system and how if we implement this and reduce the workload on our helpdesk. It's completely...
  16. P

    Notify receiver that someone is trying to send him a message but he is blocked (attach original blocked mail)

    Is it possible to sent a notification to receiver with original blocked mail as attachment that someone is trying to send him a message but he is blocked. I am most interested in both messages blocked by spam filter and messages blocked by DNSBL Sites. Would something like this work: Where...
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    WARNING: Wide character in print at /usr/share/perl5/PMG/SMTP.pm line 48.

    Hello, We have been noticing this error every time some mail is received that has characters žđščćŽĐŠČĆ in recipient mail. We are using Mail Gateway 6.3-5 with all latest updates installed. pmg-smtp-filter[1044]: Wide character in subroutine entry at /usr/share/perl5/PMG/RuleDB/Spam.pm line...
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    Clamd was NOT notified: Can't connect to clamd through /var/run/clamav/clamd.ctl: No such file or directory

    Hello, Just noticed after rebooting our mail gateway that we have this error in the logs. Any suggestion how to properly fix this without it breaking again when we do upgrade next time. I see some suggestions on https://wiki.archlinux.org/index.php/ClamAV#Error:_Clamd_was_NOT_notified We are...
  19. P

    Whitelist domain by using spf records (ip addresses) as reference

    Hello, Is it possible in any way to configure proxmox mail gateway to whitelist a domain and use their SPF record as a reference. This would mean for example We would like to whitelist dhl.com and if you look at their SPF record they have v=spf1 include:dpdhl._spf.dhl.com...
  20. P

    Stopping spam from the MX filter in reply to field

    Hello, I have been working for the past month on improving how proxmox is filtering mail for our company. The default installation is very conservative and you need to take additional steps to ensure malicious mail is blocked. Before we had barracuda filter that was good but again has it's own...
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