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1. I am not sure what whitelist you referring to. Pls explain more. 2. You can set custom SA score under Spam Detectors -> Custom Scores.

If you plan to use spamassassin only, create custom rules for DNSBL blacklist. https://support.cpanel.net/hc/en-us/articles/4403033351959-Adding-Custom-RBL-DNS-Lookups-To-SpamAssassin # DNSBL custom blacklist header DNSBL_UCEPROTECT1 eval:check_rbl('uceprotect1'...

1. Global whitelist (Configuration -> Mail Proxy - Whitelist) will disable all SMTP checking include greylist, SPF and DNSBL. https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#_mail_proxy_configuration 2. Disable DNSBL and spamassassin should able to detect blacklisted IP (with the...

check out https://forum.proxmox.com/threads/dnsbl-threshold.58535/ https://forum.proxmox.com/threads/dnsbl.89624/

Too much DNSBL site and only 1 threshold could lead to false positive. Try use less DNSBL site or increase the threshold. Below is my DNSBL setting. For mail filter, create custom mail filter to quarantine suspicious mails. https://forum.proxmox.com/threads/mail-filter-example.71904/

What is your DNSBL list and threshold? Did you customize mail filter rule?

Post a screen shot of your current mail filter rules.

From your mail header, there is no X-SPAM-LEVEL info. Did you enable the default modify header mail rule? You still did not list down what mail filter rule that you have setup to filter the spam.

Setup DNSBL, mail filter and spamassassin should help to improve spam detection.

You need to customize your own mail filter to catch the spam as different enviroment is not the same. https://forum.proxmox.com/threads/mail-filter-example.71904/

What mail filter did you setup to catch this spam mail?

Use mail filter with who/what object to filter from/to/subject header. Again, you have to study the spam mail and customize your rules against it. https://forum.proxmox.com/threads/mail-filter-example.71904/

PMG utilize few options to block spam. 1. DNSBL - block blacklisted IP based on your DNSBL list. 2. Mail filter - block/quarantine based on your custom what/who object rule. 3. Spamassassin rules - increase/decrease SA score based on spamassassin default and your custom rules. You have to...

I mean if the IP is not blacklisted in DNSBL then spam mail will through. Your others options is mail filter and spamassassin rules.

Is the IP being blacklisted?

You need to enable uceprotect and backscatterer in your DNSBL list. https://www.uceprotect.net/en/index.php?m=6&s=11 https://www.backscatterer.org/?target=usage

Check out some spamassassin custom rules. For the URI rule, you have to customize it based on your situation and keyword. https://landofnightandday.blogspot.com/2021/05/proxmox-mail-gateway-spamassassin.html

If the spam mail match your custom rules, it will show up in your mail's spam info. X-SPAM-LEVEL: Spam detection results: 9 AWL -3.026 Adjusted score from AWL reputation of From: address BAYES_50 0.8 Bayes spam probability is 40 to 60%...

Check out uri rule. https://cwiki.apache.org/confluence/display/SPAMASSASSIN/writingrules https://github.com/kawaiipantsu/spamassassin-rules/tree/master/rules

Create custom spamassassin rules. https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#_custom_spamassassin_configuration