Problem with sendmail 8.13.7

[Paul Howarth]

Stefan Kuhlemann wrote:
> Hi  mailinglist
> 
> I have a strange problem with sendmail 8.13.7. (Fedora Core 5)
> 
> Sendmail is not able to send out any mail's. But: other smtp-hosts are 
> able to contact and deliver mails to this sendmail. The acutal 
> configuration did work until the last update via yum (which included the 
> sendmail update).
> 
> More mysterios is: Using telnet from this host, I am able to send out 
> mail's without problems....
> 
> The sendmail log files says: (loglevel 15)
> Jul 23 19:06:38 sleeperbase sendmail[21362]: k6MKtL56014195: 
> makeconnection (somehost.com. [1.2.3.4]) failed: Connection timed out 
> with somehost.com.
> 
> Some sniffing gave the following result:
> 
> The SMTP-connecion opens, the remote host send it's greeting but the 
> local sendmail does not send an EHLO or HELO ... it doen't do anything 
> and the connection times out.
> 
> Sniffing at the remote host:
> The connection establishes successfull, the host sends it's greeting, 
> but then there will be no answers from (this time the remote) sendmail, 
> after some retransmits the connections times out.
> 
> Any ideas?

Broken firewall rules perhaps?

Any SELinux errors in the logs?

Paul.