RE: Securing Sendmail 8.11.6-23 from spammers

Thanks for all your feedback.

I built a new /etc/mail/access file, and also did the following correction
in my sendmail.mc and generated a new sendmail.cf file.

> > DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')
>
> Sendmail is listening on the loop back interface only. Mail sent from
> anywhere else will not be accepted.  Comment out the above line, and
> regenerate sendmail.cf.

All relaying has stopped (checking it by "relays.osirusoft.com") but local
users still can not send or receive e-mails.  I guess I just have to wait
till I get cleared by "relays.osirusoft.com".

By the way; While watching the maillog,  I noticed the following line. Does
this mean anything to you guys?

Mar  6 12:16:33 zzz sendmail[1435]: h24MgUc01676: to=<[email protected]>,
delay=1+21:34:03, xdelay=00:01:01, mailer=esmtp, pri=91549294,
relay=mail.xxx.info. [x.x.x.x], dsn=4.0.0, stat=Deferred: Connection timed
out with mail.xxx.info.

I think this guys is trying to relay. So I palced a REJECT on both the IP
and "@xxx.info" in the access file.  But it keeps on getting created in the
maillog file with a different "delay=1+21:34:03". Any comments?  Thanks