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PMG use clamav as the default AV engine for virus scanning and the default detection rate is bad. Beside add custom 3rd signature database, let try to create your own custom signature database using clamav's sigtool. 1. Use sigtool to hex dump the first 2KB output of the suspicious file to the...

Notice Toggle Spam Info show missing description for my custom SA rules (CLICK_BAIT, LIST_UNSUB, SUBJ_SPAM1, SUBJ_UTF8), while it show all in the raw format. Could it be a bug?

By default PMG 7 use clamav as it default antivirus scanner and also based on Debian as it base OS. Due to RAR format is a proprietary file-format and Debian have policy to move all non-free package to the non-free repository. Further more, PMG do not enable the non-free repo by default so it...

I want to test outgoing rule with virus filter and it seem not working. Have anyone using it? The rule is using lowest outgoing priority and the same rule work with others what object like content-type and match field.

If you enable PMG's webUI access from the public internet, you may notice alot of authentication failure in /var/log/daemon.log. Setup fail2ban to block/ban suspicious authentication failure attempts. IMPORTANT: This setup was intended on a new setup of PMG 7.x. If you upgrade from previous...

Just notice test button no longer working on mail filter object. It is just me? root@pmg:~# pmgversion -v proxmox-mailgateway: 6.2-2 (API: 6.2-6/3e362107, running kernel: 5.4.65-1-pve) pmg-api: 6.2-6 pmg-gui: 2.2-3 pve-kernel-5.4: 6.2-7 pve-kernel-helper: 6.2-7 pve-kernel-5.3: 6.1-6...

How to export search/query from Tracking Center as report?

I notice there is not much who and what object example available in the forum. Just want to share some that I am currently using now. The objects may cause some false position, I would to set quarantine instead of block. Others can share their objects too. Who Object: Regex...

Not able to add Chinese character in what object. 终止您的电子邮件帐户正在进行中 I try filter via regex (?i)(\W|^)(=\?utf-8\?b.*)(\W|$), it show OK when test string but email not being filter by the rules. Return-path: <xxx@gmail.com> Received: from pmg.xxx.com ([192.168.40.106]) by mail.xxx.com...

Notice sendgrid use CNAME for their emails services, you will encounter receiving issue if you enable reject_unknown_sender_domain. You might want to whitelite the unknown domain under Configuration -> Mail Proxy -> whitelist. Jun 4 12:37:14 pmg postfix/smtpd[27059]: connect from...

I have setup a smtp filter with what rules to block spam email. It work but I notice the same rules will block below 2 email subject even thought I do not see any word/phase listed in my what object. Do anyone have any idea? You have received a new Order ${order_number} at ${shop_name} Re...

There is no download option under Virus Quarantine. It is possible to add that in the UI? I know you can copy the email raw format, save as .eml and open in a email client.

With PMG-6, there is option to remove/quarantine attachment. Due to receive many spam mail with phishing html files. I recommend to create a remove/quarantine attachment rules. You can opt for remove or quarantine the attachment.

Currently using DNSBL, reject unknown reverse client and sender and spam filter to detect spam mails and work out not bad. I have read about RPZ aka DNS firewall and want to try it out using ubuntu and BIND9 as a forwarding DNS server for PMG...

I have just upgrade to PMG-6.1 and testing the spamassassin custom score from the GUI. I have add DEAR_SOMETHING to 5 but seem like not correctly mark the X-SPAM-LEVEL score. Is there something that I am missing?

I know rDNS should be a standard for all standard email server. But since it is very hard to make sure all email server to have a valid rDNS setup, it is possible to have the GUI option to choose between reject_unknown_client_hostname and reject_unknown_reverse_client_hostname? Notice there is...

As u can see I have set 3 transport entry to use another postfix with sendgrid as relay. But I notice it will add 3 entry to mynetworks in main.cf. If not mistaken you do not need to add the relay IP to mynetworks to work, right?

If not mistaken the message_size_limit is global setting. It there option to set message_size_limit per domain or users?

Currently using pmg 6.0-4 as incoming and outgoing mail gateway, notice the message_size_limit setting is not working. I have set a 15MB message size limit but when I try to send a 10MB mail, I received bounce back email saying "552 5.3.4 Message size exceeds fixed limit". If i bypass the pmg...