On 12/11/2009 03:20 PM, Greg Woods wrote: > On Fri, 2009-12-11 at 18:02 -0500, Tony Nelson wrote: > >> there is no requirement that a >> domain have an A record to exchange mail >> > True, but there are plenty of mail servers (including sourceforge.net) > that verify DNS information by back connecting. The domain therefore has > to either have an A record, or an MX record pointing to a server that > does have an A record, and the server the MX points to (or A if no MX) > must be reachable on the SMTP port. We have found this out because we > modify all MX records to point to our gateway, and we've had people send > mail out from machines we weren't told were mail originators (and > therefore they have no MX), and since the SMTP servers on these machines > are not reachable from outside, mail servers like sourceforge.net refuse > to accept mail from these hosts. So it is possible to have your outgoing > mail rejected due to DNS inconsistencies. > > --Greg > > Well, I did some digging. One instance where this happens is the following. If I send this to my own "user@xxxxxxxxxxxxxxxxx" account, from my account here (which is were it gets forwarded back to anyway), then I see this behavior. If I sent this to the same account from a 3rd party server (gmail, etc) then it works fine. Very, very odd. -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
