Regex exclude specific domain extension

[azuza]

Dear,

in three days, my domain got spammer from various domain (.ru .cn .com.ph .co.jp, etc ). I want to block all domain but whitelist specific domain like .com / .co.id

I've already searched and tried every regex and still no valid solution.

Please help me

 

[hata_ph]

https://forum.proxmox.com/threads/mail-filter-example.71904/

 

[azuza]

https://forum.proxmox.com/threads/mail-filter-example.71904/

Sory. thats match condition. I need Exclude condition. I've already tried using "?!" but not working normally

 

[hata_ph]

Create a whitelist and blacklist domain list. Put allow whitelist in higher priority to blacklist in the mail filter rules.