That sounds like authentication problems if the error is generated on your server.
I would check the SMTP logs to see what happens when they connect. Cordially, Heimir Eidskrem i360 Consulting 11152 Westheimer Suite 147 Houston, TX 77042 Ph: 713-981-4900 [email protected] www.i360.net www.smart-it-services.com Houston's Leading Internet Consulting Company -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Don Winsauer Sent: Tuesday, April 01, 2014 6:41 PM To: [email protected] Subject: [MBF]Need help with "Unable to relay" messages I have been getting calls from a few different customers complaining that some email is being bounced back. These are addresses that they emailed successfully just the prior day or even earlier in the day. When I check the logs or have them send me the bounce message, the error from the receiving server is a form of "unable to relay for...". At first I thought that the receiving server was misconfigured and somehow trying to forwarding the message. Today, I received three phone calls from different people with the issue. Are mail admins using this error message for other issues? I checked and don't see us (ms1.net1media.com) on any blacklists. Anyone else experiencing this issue or have ideas as to what is happening? Thanks, Don ________________________________________________________________ Sent via the WebMail system at net1media.com ############################################################# This message is sent to you because you are subscribed to the mailing list <[email protected]>. To unsubscribe, E-mail to: <[email protected]> To switch to the DIGEST mode, E-mail to <[email protected]> To switch to the INDEX mode, E-mail to <[email protected]> Send administrative queries to <[email protected]> ############################################################# This message is sent to you because you are subscribed to the mailing list <[email protected]>. To unsubscribe, E-mail to: <[email protected]> To switch to the DIGEST mode, E-mail to <[email protected]> To switch to the INDEX mode, E-mail to <[email protected]> Send administrative queries to <[email protected]>
