Web Hosting Talk : Web Hosting Main Forums : Dedicated Server : email failing on check_rcpt

[jaschwa]

I recently applied the Sun patches to my RaQ4 and some customers are reporting an inability to send email. This is a typical message from the maillog file:

May 24 15:19:27 www sendmail[26181]: h4OKJR326181: ruleset=check_rcpt, arg1=<Brad.Robinson@mcsinet.com>, relay=adsl-67-116-7-48.dsl.snfc21.pacbell.net [67.116.7
.48], reject=550 5.7.1 <Brad.Robinson@mcsinet.com>... Relaying denied

I know that this is not a case of POP-before-SMTP, but rather it has something to do with the "ruleset=check_rcpt".

I am able to email the same recipient from my email account on the same server, but different domain. Any ideas?

[jaschwa]

After doing some research on sendmail.org, it seems in the newer versions of sendmail that relaying is automatically denied for non-local senders unless the POP before SMTP hack is running. Well, Cobalt's POP before SMTP is enabled and running, and poprelayd -p does list the IP addresses of people who have POP'd, but relaying is still denied.

Is there a newer version of POP before SMTP to install?
Does anyone know what the sendmail.cf file should look like to use the popip.db that POP before SMTP maintains?

[jaschwa]

One of the updates had made a copy of the sendmail.cf file and labeled it sendmail.cf.nopopauth. This copy had the POP-before-SMTP stuff in it. I rolled back to this copy and sendmail seems to be OK again.

MORAL: keep back-up copies of critical config files.