sendmail, a couple of questions.

[Chuck Swiger]

Efren Bravo wrote:
[ ... ]
> 1st. How could I avoid this error
> (/var/log/maillog)?
> Mar 29 15:52:51 mailsrv sendmail[10381]:
> gethostbyaddr(yyy.yyy.yyy.yyy) failed: 1

Fix your reverse DNS for that IP.  If yyy is internal, set up a local nameserver
to provide a reverse zone, otherwise talk to your ISP if the IP is public.

[ ... ]
> 2nd. What does it mean?
> Mar 29 16:07:20 mailsrv sm-mta[10399]: alias
> database /etc/mail/aliases.db out of date

You changed /etc/mail/aliases, but forgot to run newaliases.
(Or use "make maps" or "make all").

-- 
-Chuck