smtp-refuser(8)

NAME

smtp-refuser [ explanation [ argument...  ] ]

smtp-refuser is usually used along with tcpd(8) or some
other TCP security daemon to bounce messages from IP addresses of
known spammers. Advantages of smtp-refuser over just blocking
connections are that the remote SMTP server will not retry, and
legitimate e-mail senders will see a polite message telling them
why their mail was blocked and who to call to get around the
blocking.
Upon SMTP commands DEBU, EXPN, RCPT, and VRFY,
smtp-refuser will report a 550 (no such recipient) error, fol
lowed by the contents of the file explanation.
smtp-refuser.conf configuration file: /etc/smtp-refuser.conf consists of two lines. First; should contain the name of the person who is to be contacted if; blocking prevents legitimate mail transfer. The second line; should contain the means of contact (i. e. a telephone number, or; an e-mail address). All other lines will be ignored.
Substitutions in the explanation: The following character sequences in the explanation file; will be substituted:; `$C' Replaced by the first line of smtp-refuser.conf; (see above).; `$P' Replaced by the second line of smtp-refuser.conf; (see above).; `$1', `$2', ... `$9'
Replaced by the first, second, etc. command-line

argument after explanation.; Substitution can be prevented using backslash (`�) charac; ters: the character following a backslash will be displayed lit; erally (the backslash will be discarded).

/etc/smtp-refuser.conf

Bruce Perens <bruce@perens.com> Manual page written by Matej Vela <vela@debian.org>.: 15th May, 1999