1Insert the following strings to file sendmail.def.
………
ACCEPT_LOWER=yes
………
………
!ACCEPT, etc. tells the server to receive mail to hosts located within its domain.
LOWER, etc. tells the server to receive mail to hosts located within its domain, EXCEPT mail to hosts listed in sendmail.lw.
2Add a string (specifying
………
fax
!With “fax”, the server DOES NOT receive mail to fax.abc.com.
3Create sendmail.cf and
4overwrite the original sendmail.cf with it.
5Restart the mail server.
After the above changes, sendmail will forward mail addressed to xxxx@fax.abc.com to your fax machine instead of processing it itself.