https://talk.plesk.com/threads/server-side-mail-filtering.102776/page-2
Server-side mail filtering | Page 2 | Plesk Forum
Hi AdrianC, to request functions / implementations / featuires for Plesk, please consider using "http://plesk.uservoice.com/". Feature Suggestions Please...
server sidemail filteringpleskforum
https://www.mx-relay.com/
MX-Relay | SMTP Service, SPAM-Filtering & E-mail Protectie Oplossingen
smtp servicespam filteringmxrelaymail
https://bugzilla.mozilla.org/show_bug.cgi?id=963362
963362 - crash in nsMsgFilterList::GetFilterAt(unsigned int, nsIMsgFilter**) filtering incoming mail
RESOLVED (nobody) in MailNews Core - Filters. Last updated 2016-11-13.
crash