Re: Re: [PHP3] CheckDNSRR failing on a valid domain

> > Right, but I may send messages to mlemos@e-na.net and they get delivered. The normal MTA process to deliver to a@b 1. Are there any MX records for b? 2a. Yes: Retrieve list, store list, sort by priority, try each host beginning with the one with the highest priority (=lowest number in the MX record) 2b. No: Retrieve A record for b and try to send it to there 3. If email was not sent successfully, wait time T and go to 1 (this is a simplified scheme only, of course) e-na.net does not have any mx records, so emails to it will be delivered to the A record of e-na.net. > > But, is there any rule/RFC that tells to look for mail.domain when you > > don't find a MX record, or was that a logic guess that you made? RFC 974, "MAIL ROUTING AND THE DOMAIN SYSTEM" -- Regards, Sascha Schumann Consultant