Pls add bdgiedjhea.po6e4ina.com <Jake at bdgiedjhea.po6e4ina.com> to /etc/hosts file and , then add bdgiedjhea.po6e4ina.com <Jake at bdgiedjhea.po6e4ina.com> to mydestination parameter in /etc/postfix/main.cf file mydestination = $myhostname, localhost.$mydomain, localhost, bdgiedjhea.po6e4ina.com <Jake at bdgiedjhea.po6e4ina.com> then, restart postfix. That't it. On Mon, Nov 22, 2010 at 9:17 AM, Rob Kampen <rkampen at kampensonline.com>wrote: > Ben McGinnes wrote: > >> On 17/11/10 7:26 AM, Rob Kampen wrote: >> >> >>> Examining the postfix queue with postqueue -p: I see many >>>>> (Host or domain name not found. Name service error for >>>>> name=bdgiedjhea.po6e4ina.com type=MX: Host not found, try again) >>>>> Jake at bdgiedjhea.po6e4ina.com >>>>> My question - why does this stay in the message queue - why not dumped >>>>> back with message undeliverable or dropped? >>>>> >>>>> >>>> >> What is the complete output of postqueue -p? What is the From address >> and, more to the point, is it MAILER-DAEMON? >> >> > Yes it is > >> >> >>> Agreed, however this opens a potential DoS attack vector - I'm >>> trying to determine why my postfix even has these requests present >>> as I'm not initiating the emails (as far as I know) and I do not >>> forward emails for any other domains. >>> I feel like I'm missing something......confused maybe >>> >>> >> >> It could be backscatter. >> >> Run postqueue -p and pick one of the messages, it shouldn't matter >> which. Then run: >> >> postcat -q $MSGID | less >> >> Where $MSGID is one of the messages in the queue. That will show you >> the message and headers. I'd be willing to bet it's your server >> trying to send a rejection/spam detection to a server. >> >> >> > Correct - thanks for the pointers on how to track it down - so now my > question is how do I set things up to simply try this once and then drop it, > rather than queue it up for the next five days with all the attendant dns > errors. This is definitely at the boundaries of my mail setup experience - > for some reason the other two mail servers I run do not seem to get the same > level of spam and thus I seldom notice this. > >> Regards, >> Ben >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> http://lists.centos.org/mailman/listinfo/centos >> >> > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- Thank you Indunil Jayasooriya -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20101122/55dc8473/attachment-0005.html>