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start configuration

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  • Last reply by Toad-Hall

djn
djn
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I have two computers. Our e-mail server is comcast. Computer-1 has e-mail #1; computer-2 has e-mail #2. Computer-2 forwards certain e-mails to computer-1, and vice-versa. Recently I upgraded computer-2 to computer-3. Everything went smoothly, EXCEPT Computer-3 cannot forward e-mails to computer-1 (computer-1 can forward to computer-3). I get the following error message:

"Sending of the message failed. An error occurred while sending mail. The mail server responded: Not our Customer. Please check the message recipient " [edited] @comcast.net" and try again."

What gives?

I have two computers. Our e-mail server is comcast. Computer-1 has e-mail #1; computer-2 has e-mail #2. Computer-2 forwards certain e-mails to computer-1, and vice-versa. Recently I upgraded computer-2 to computer-3. Everything went smoothly, EXCEPT Computer-3 cannot forward e-mails to computer-1 (computer-1 can forward to computer-3). I get the following error message: "Sending of the message failed. An error occurred while sending mail. The mail server responded: Not our Customer. Please check the message recipient " [edited] @comcast.net" and try again." What gives?

Modified by James

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Toad-Hall
Toad-Hall
  • Top 10 Contributor
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That error suggests the address you are forwarding to is not correct as server says it does not exist. 550 Not our Customer. This error results when a message is sent to a non-existent Comcast customer. http://postmaster.comcast.net/mail-error-codes.html

As you have filters doing the 'forwarding'. Check the Message Filter to see if there is a spelling mistake in the forwarding to comcast address. This could be a small error like a space in the wrong place, a comma where there should be a full stop.

I presume this only occurs on the filtered forwarded email and you can otherwise send emails perfectly ok.