On Tue, Apr 07, 2015 at 11:03:51AM -0400, chris wrote: > What do MX records have to do with outbound SMTP delivery? Do you mean that > if the webserver cant relay to to first MX record then try the secondary mx > records? This still has the primary server trying and many recipients dont > have multiple mx records or some that do dont always have them on different > networks :)
Even outbound e-mails are undergoing a MX resolution on some point. The webservers probably do MX resolving if they do send directly. The fallback MX can be imagined as a virtual MX low priority MX for every destination (regardless how many MX entries a site actually has). If all "official" MX for a destination fails (probably even just for greylisting), the fallback MX soaks up the message. Did you mean something completly different? Maybe I'm wrong in understanding what you really want. ;) -- Johann E. Klasek Zentraler Informatikdienst - Kommunikation Technische Universität Wien Tel: +43 1 58801- 42049 A-1040 Wien, Wiedner Hauptstr. 8-10/020C Fax: +43 1 58801-942049 PGP: http://pgpkeys.tuwien.ac.at/ - jklasek - Key ID 37159641 *** There are three kinds of people: men, women, and unix. *** _______________________________________________ mailop mailing list mailop@mailop.org http://chilli.nosignal.org/mailman/listinfo/mailop
