Keywords: 

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Question:

Anyone have any ideas what's causing this?

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Could not send:  error= -1
Status: 550 5.7.1 Unable to relay for (email address)
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We're converting from a local Exchange server hosting our e-mail to something based on ADS. I don't entirely understand the new system (not much up on ADS).

Answer:

1. Go check the mail for...

   Office_of_Information_Management@thedomain.com
   

   and see if there are any good bounce messages in there.

2. Also check with your mail admins.

Basically it seems that the mail server you are connecting to does not want to send the email to the "to" address.

This is usually because you are connection to the mail server from the "outside" of the ip address range that it thinks it "owns".

In any case set up a normal Internet email program (Outlook Express, Eudora, Netscape Mail, The Bat, etc) and see if you can make it work from the same machine and the same mail host.