0a6419d7__virus_filter_for_SMTP_servers__Comments
[Token] EXPN [Type] Verb [Reference] RFC2821 [SMTP server] Many [Comments] 
Expand a mailing list address into individual recipients. Often disabled to prevent use by spammers
ESMTP Keywords and Verbs (commands) Defined - Fluffy the SMTPGuardDog - spam and virus filter for SMTP servers
Comments