Regular expressions

[vladosubu]

Good afternoon! After we started specifying domains in the blacklist through regular expressions

Oct 11 11:37:08 mx3.domain.com pmg-smtp-filter[312196]: WARNING: ^* matches null string many times in regex; marked by <-- HERE in m/^* <-- HERE .cle.co$/ at /usr/share/perl5/PMG/RuleDB/WhoRegex.pm line 103.

For example, we want to block a domain and all its subdomains for example.com

We have specified a regular expression *.example.com

Apparently, that's why there are such errors in the logs. Please tell me, in our case, how to specify correctly?

.*example.com

Or

.*\.example\.com

Or something else? What's the right thing to do?

 

[Stoiko Ivanov]

Please tell me, in our case, how to specify correctly?

.*example.com

yes this looks correct - see:
https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#pmg_mailfilter_regex
(and one of the many tutorials on regex online)

I hope this helps!

 

[vladosubu]

Aah, I see now, thanks.
Another question:
Is it possible somehow to automatically change all domains in the blacklist to regular expressions?

 

[Stoiko Ivanov]

Is it possible somehow to automatically change all domains in the blacklist to regular expressions?

either the GUI or the REST API/pmgsh (you need to read the domains and add them as regex, then remove the domains):
https://pmg.proxmox.com/pmg-docs/api-viewer/index.html#/config/ruledb/who

 

[vladosubu]

Don't you have a ready-made script? Or do you need to do it yourself?

 

[Stoiko Ivanov]

Don't you have a ready-made script? Or do you need to do it yourself?

You'd need to do it yourself - this is not requested too often...