We are having trouble e-mailing two domains. All other e-mails seem to be working fine. two types of non delivery messages coming back.
Could not deliver the message in the time limit specified. Please retry or contact your administrator.
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
We have been trying to troubleshoot from both ends. My question is two fold.
First, I attempted to telnet into both mail server and was ok up to the point of Mail From: <email address>. in both cases the mail servers rejected me. Could that be a security setting on those mail servers, or should that work in most all cases. Does that rejection point to an issue on their side, or can that happen no matter who is attempting to contact the mail server? I have checked all our DNS and MX records setting and they seem to resolve fine. I'm not sure what else to check. Any suggestions would be appreciated.