[CentOS] Sendmail problem - baffled

Jussi Hirvi wrote:
> Some more info. Below is a more complete telnet session from backup mail
> server (mx2.greenspot.fi) to primary mail server (mail.greenspot.fi).
>
> It only proves that sending mail works fine from command-line. But my
> sendmail setup cannot do the same.
<snip>
Is there any chance that your sendmail is sending an invalid id?

      mark