>Hmm, I'm on DSL, so, should I place my IP in trusted_networks? No. Your IP address does not relay mail to you.
>For >instance, I did have this "trusted_networks 192.168/16 71.48.160.0/20", >however, looking at the received line of the post I initally made, my IP is >now 71.51.96.186. trusted_networks is assumed to have *mail servers* relaying mail to you. Not each and every client machine in your ISP's address space. Not yours, nor your neigbors. >The received line also shows this: > >Received: from [71.51.96.186] ([71.51.96.186:27915] helo=[192.168.2.2]) > by mailrelay.embarq.synacor.com (envelope-from ><[EMAIL PROTECTED]>) > > >Should I put the IP for mailrelay.embarq.synacor.com on the trusted_networks >line? That comes out to be 208.47.184.3. I also had this as internal_networks >internal_networks 71.48.160.0/20, is that correct? > Yes, if that mailrelay.embarq.synacor.com is your ISP's mx receiving mail sent to you. I did $ host -t mx embarqmail.com and it said embarqmail.com mail is handled by 10 smtp.embarq.synacor.com. $ host mailrelay.embarq.synacor.com mailrelay.embarq.synacor.com has address 208.47.184.3 $ host smtp.embarq.synacor.com smtp.embarq.synacor.com has address 208.47.184.2 I don't understand what is this "mailrelay", it might be the sending server, but that mx host "smtp" at least should be trusted. Better to put those both to your trusted_networks, I guess.