A commit to Fedora non-pkg CVS triggered the following:
[...]
Begin forwarded message:
Date: Mon, 21 Jul 2008 20:28:08 -0400 From: Mail Delivery Subsystem MAILER-DAEMON@redhat.com To: mschwendt Subject: Returned mail: see transcript for details
The original message was received at Mon, 21 Jul 2008 20:28:07 -0400 from bastion.fedora.phx.redhat.com [10.8.34.50]
----- The following addresses had permanent fatal errors ----- cvsextras@fedora.redhat.com (reason: 554 5.7.1 cvsextras@fedora.redhat.com: Relay access denied)
----- Transcript of session follows ----- ... while talking to mail-int.fedora.redhat.com.:
DATA
<<< 554 5.7.1 cvsextras@fedora.redhat.com: Relay access denied 554 5.0.0 Service unavailable <<< 554 5.5.1 Error: no valid recipients