When I updated from RH 6.2 to RH 7.0 my MTA (qmail) could not receive
SMTP connections on port 25 any longer. I found that the course was
a bad conversion of the relevant line in /etc/inetd.conf to
/etc/xinetd.d/smtp. The man page for xinetd.conf says:
"In contrast to inetd, the server name should not be included in
server_args." But the server name was still included in the args -
and I could luckily solve the problem by removing it.
*** This bug has been marked as a duplicate of 17969 ***