Could you please investigate an issue where email messages coming from my Exchange server being sent to @comcast.net email addresses are being rejected? One message received was "550 5.1.0 Connection is not being accepted at this time. (in reply to MAIL FROM command)".
Exchange server information, mail.cpind.com with public (Comcast) IP 18.104.22.168
I'm not seeing anytihng corresponding to this. Could you try again and give me a rough estimate on date/time so I can check logs?