Block spam and user lists

Jayz

Member
Apr 30, 2019
27
1
8
43
Hello, I have Proxmox MG 5.0 and 3 questions:
1. How I can block spam by text phrase from body text?
2. I have global and users white lists. If I block spam in global list for all users and 1 user add email address in own white list, this user can't receive this mail. How I can change priority? I want that users white/black lists have more priority than global.
3. How to block email/subject with utf8/ Cyrillic symbols?
Thanks
 
Last edited:

Stoiko Ivanov

Proxmox Staff Member
Staff member
May 2, 2018
6,968
1,080
164
Hello, I have Proxmox MG 5.0 and 3 questions:
Please consider updating to the latest versions (5.2), since quite a few bugfixes and other improvements were made (`pmgversion -v` should show you which exact versions are installed)

1. How I can block spam by text phrase from body text?
This usually leads to a large number of unexpected false positives and in most cases where users wanted to implement this it was due to a misconfiguration, and fixing that removed the need for blocking based on trigger-words - please check your mail.log for results from pmg-smtp-filter and explain which mails should get blocked but aren't blocked.
That being said - you can create a custom spamassassin rule to block on a certain text in the body and include that in pmg (check out the pmg-admin-guide (section 4.8)
https://www.proxmox.com/images/download/pmg/docs/pmg-admin-guide.pdf and https://wiki.apache.org/spamassassin/WritingRules).

2. I have global and users white lists. If I block spam in global list for all users and 1 user add email address in own white list, this user can't receive this mail. How I can change priority? I want that users white/black lists have more priority than global.
This is not possible in a straight-forward manner - the rationale behind is that the admin-provided black/whitelist has a higher priority and actually blocks mails, the user fed black-whitelist is there for users to prevent mails from entering the quarantine or forcing them there.


3. How to block email/subject with utf8/ Cyrillic symbols?
See the point about false positives in the body above. If you want to block such mails you can add a rule with a 'match field' object matching the subject and block mails if it contains any cyrillic character. Additionally the following links could help:
* http://sa-russian.narod.ru/no_russian.html
* https://spamassassin.apache.org/full/3.4.x/doc/Mail_SpamAssassin_Conf.html
* http://spamassassin.1065346.n5.nabble.com/Cyrillic-spam-td47920.html

Hope this helps!
 
Sep 20, 2012
111
2
38

Stoiko Ivanov

Proxmox Staff Member
Staff member
May 2, 2018
6,968
1,080
164
* The value is the regular expression that will be used by the rule system
* the Test String is for you to try if the regular expression works as expected - you just enter a sample string and click on test

hope this helps!
 

Kapellan

New Member
May 23, 2022
1
0
1
Когда я пытаюсь ввести эту информацию, я получаю следующую ошибку: http://prntscr.com/nvujgy

Ошибка проверки параметра. Поле (400): значение не соответствует шаблону регулярного выражения

Регулярное выражение отформатировано неправильно?
Как я понял решения данной проблемы так и нет?
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get your own in 60 seconds.

Buy now!