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.
I wrote that MAILER-DAEMON can get mail through. I am not actually sure
about that. (One warning message did come through, but maybe it was
because something I changed in the config - not sure anymore.)
Here's the successful telnet session:
[root@mx2 ~]# telnet mail.greenspot.fi 25
Trying 83.143.217.182...
Connected to mail.greenspot.fi (83.143.217.182).
Escape character is '^]'.
220 mail.greenspot.fi ESMTP Sendmail; Tue, 15 May 2012 23:17:59 +0300
HELO mx2.greenspot.fi
250 mail.greenspot.fi Hello mx2.greenspot.fi [83.143.217.179], pleased
to meet you
MAIL FROM: me1@xxxxxxxxxx
250 2.1.0 me1@xxxxxxxxxx... Sender ok
RCPT TO: me2@xxxxxxxxxx
250 2.1.5 me2@xxxxxxxxxx... Recipient ok
DATA
354 Enter mail, end with "." on a line by itself
Testing testing
.
250 2.0.0 q4FKHxf7012785 Message accepted for delivery
QUIT
221 2.0.0 mail.greenspot.fi closing connection
Connection closed by foreign host.
- Jussi
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