> 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
