Hi All - it seems to me that this may have been covered, but I wasn't able to find any XMail specific references to it:
Sending to Earthlink, my customers are getting a number of seemingly intermittent errros as follows: 550-EarthLink does not recognize your computer (67.102.229.138) as connecting from an EarthLink connection. If this is in error, please contact technical support. 550 relaying to <[EMAIL PROTECTED]> prohibited by administrator It would seem, after some research, that this is because of a DNS problem in which the following occurs (according to Earthlink): .... are due to an improper MTA configuration with the host that is responsible for delivering outbound mail on your network. In a nutshell, the mail server which attempted to deliver mail to the earthlink.net e-mail address was initially unable to successfully deliver the mail to the earthlink.net MX (more than likely due to high load on our end, no Earthlink MX host was available to accept the transaction at the moment of the delivery attempt), and so the Earthlink A record was attempted by the sending mail server. The earthlink.net A record, however, forwards port 25 connections to our outbound SMTP servers. Unless the mail server attempting the transaction maintains IP connectivity through the Earthlink network, delivery attempts through the A record will consequently fail and the above quoted error message will be returned. on the same site where I found the most helpful information on this (http://forums.smartertools.com/ShowPost.aspx?PostID=3872) this is also mentioned: The behavior exhibited by the sending mail server, in this case, is not standard. According to RFC 2821, "Address Resolution and Mail Handling": "If one or more MX RRs are found for a given name, SMTP systems MUST NOT utilize any A RRs associated with that name unless they are located using the MX RRs; the "implicit MX" rule above applies only if there are no MX records present. If MX records are present, but none of them are usable, this situation MUST be reported as an error." http://www.faqs.org/rfcs/rfc2821.html Does anyone have any recommendations or suggestions about this? Does version 1.23 correct the attempt to send to an A record, or is that is even what may be happening? I recall a lot of commentary recently on the DNS/A record issue, but I can't recall (and I have not kept) the email thread about that. Is anyone else having this problem? Thanks, Jeff - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
