Am 16.01.2013 14:57, schrieb Rafael Azevedo: >> Why do you believe the error messageas from random mail servers? > > Because for some reason the secondary mail server is telling me to send to > primary first, very simple. If it were sending to primary, then we should not > get this error, right? > > But maybe the DNS is giving me wrong information for some reason, maybe its > an antispam protection, expecting me to send to sec mx and then give up in > case of failure. > >> Postfix always respects the MX preference order. If you believe >> it does not, then YOU must show the tcpdump packet recording. > > I do believe that, but for some reason I'm getting this error when postfix > for some reason seems to be sending to secondary MX servers. When I run > postqueue -i MSGID it tries to delivery again and then mail gets sent. > > So please, dont tell me to prove you with TCP DUMP because I'm not assuming > anything here. I'm humbly asking for help because of this unusual behavor. > You know the system much better than me and all I'm doing is trying to better > understand this situation. > > Any help would be very appreciated. > > Thanks in advance. > -- Rafael >
postfix does right in any case, you can manage mail routing tmp with transport table, in real world ,some backup mx setups are kind of broken i.e prime and backup mx have no synced greylisting database etc so messages "like try prime first" are not as rare as you might think, as long these are tmp errors it only slows down deliver out, its senseless to speculate what type of error is happing at your target domain, if you dont like ,try contact their support Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Joerg Heidrich
