The sending party is from an Exchange server. It seems I have my log lines out of order and was logging no RDNS. It was actually the null senders on the verify that resolved it. They turned off block null.
-- Jeremy McSpadden Flux Labs, Inc | http://www.fluxlabs.net<http://www.fluxlabs.net/> | Endless Solutions Office : 850-250-5590x101<tel:850-250-5590;101> | Cell : 850-890-2543<tel:850-890-2543> | Fax : 850-254-2955<tel:850-254-2955> On Aug 17, 2013, at 7:08 AM, "Jasen Betts" <[email protected]<mailto:[email protected]>> wrote: On 2013-08-14, Jeremy McSpadden <[email protected]<mailto:[email protected]>> wrote: I have one client who is unable to send through an exim server. exim/reject.log:2013-08-14 20:50:09 H=(mail.paradisefound.com<http://mail.paradisefound.com><http://mail.paradisefound.com>) [24.214.233.54] F=<[email protected]<mailto:[email protected]><mailto:[email protected]>> rejected RCPT <[email protected]<mailto:[email protected]><mailto:[email protected]>>: No reverse DNS: Sender verify failed Looks pretty messed up.... If that's for real they need to replace their client software with something that does SMTP. See if you can get a transcript of the SMTP session. -- ?? 100% natural -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/ -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
