Sendmail Errors

[Robert Early_3]

I have set up a mail server to relay mail from several client machines, but I am getting the following error in syslog on the server:
Apr 9 10:20:47 server sendmail[2493]: h399Klsp002493: SYSERR(root): buildaddr: unknown mailer mailer
Apr 9 10:20:47 server sendmail[2493]: h399Klsp002493: from=, size=1582717, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=client.mydomain.com [10.1.10.1]
Any ideas what this might be?

[Kjartan Maraas]

This could give a hint:

If the delivery agent that is selected is one for which there is no corresponding M configuration file declaration, the error is

buildaddr: unknown mailer bad delivery agent name here

I think this indicates that the clients' configuration is somehow broken?

[LucianoCarvalho]

hi,

I think it's worthwhile to run sendmail with the -v option, it will give more information about the problem.
Post the results.

regards