May 26, 2018
Spamassassin SMTP Proxy
spampd is a program used within an e-mail delivery system to scan messages for possible Unsolicited Commercial E-mail UCE, aka spam content.
It uses an excellent program called SpamAssassin SA to do the actual message scanning. spampd acts as a transparent SMTP/LMTP proxy between two mail servers, and during the transaction it passes the mail through SA. If SA decides the mail could be spam, then spampd will ask SA to add some headers and a report to the message indicating it’s spam and why. spampd is written in Perl and should theoretically run on any platform supported by Perl and SpamAssassin.