amavisd-new is a high-performance and reliable
interface between MTAs and one or more content
checkers, including virus scanners, and/or the
Mail::SpamAssassin Perl module. It talks to an MTA
via (E)SMTP or LMTP, or by using helper programs.
No timing gaps exist in the design, which could
cause a mail loss. It is normally positioned at or
near a central mailer, not necessarily where the
user's mailboxes and final delivery takes place.
