> -----Original Message----- > From: Sylvain ARNAUD > Sent: Wednesday, November 20, 2002 10:49 AM > Subject: Problem sending mail outside my domain > > > Hello, > > We are running sendmail 8.12.6 (under Linux RedHat > 7.2), we have ou own domaine, and the MX entry is well > configured and here is what's happening: > - local mail delivery is OK > - e-mail form external sites are received > - we can take our local mail from an external site > using POP3 > - but as soon as we try to send e-mail to an external > site, we have the message "Deferred: connection timed > out to mail.toto.com", and nothing else: no Relaying > denied, or DNS problem, or mail configuration > problem...
I can only assume you have properly quoted the actual error message you are getting. With this in mind -- since your getting a connection timed out error instead of relay not allowed, this indicates to me that: 1) Routing problem from your mail server to remote mail server. 2) The remote mail server is not answering on port 25 3) Possibly a firewall rule that does not allow your mail server to make outbound port 25 requests. 4) If this problem is localized to just sending to this domain, this could possibly be ECN related. Try disabling ECN on your mailserver. i.e. echo 0 >/proc/sys/net/ipv4/tcp_ecn Now try to resend your e-mail. BTW: I can't tell from your post, but if toto.com is actually where you are trying to send an e-mail... its MX record points to another system, not mail.toto.com. Steve Cowles -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list