SQL Server 2005 sp_send_dbmail doesn't send to some email addresses

Hi,

In SQL Server 2005, calling sp_send_dbmail to send an email sends successfully to an individual's email address, and the message is delivered to the recipient. But if I specify an address which is a distribution group (say software.developers@mydomain.com), although the sp returns 0 the message is not delivered to any of the recipients. I'm told by the person who looks after our Exchange server (we are running Exchange 2010 SP1) that he can't find anything in the Exchange logs for the undelivered messages. Exchange is configured to allow mail from the IP address of the server on which SQL Server resides (and of course some messages sent through sp_send_dbmail are delivered). I've examined the logs and queried for message status and they state all messages have been sent and queues are working.

Thanks for any help.

Louise
louise001Asked:
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HumpdyConnect With a Mentor Commented:
hi,
this won't work I'm afraid, you have to specify the individual addresses.

what you will need to do is get your exchange admin to allow people to send a mail to
staff@company.com from an external source, other than the local exchange.
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louise001Connect With a Mentor Author Commented:
Hi,

Thanks for responding. My colleague who adminsters our Exchange Server tells me he found a setting which was enabled, requiring all senders to be authenticated (as I said in my original post I'd asked him to look at the Exchange side of things before ...). Now that he's removed this authentication requirement off, messages sent using sp_send_dbmail are delivered succesfully.
Thanks for your help in any case, as without your suggestion I probably wouldn't have been able to get my collague to explore any further than he already had.

Cheers,
Louise
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HumpdyCommented:
cool, would be interesting to see what he changed exactly.
Opening the distribution lists to external would do the trick. Not sure what he means by authentication requirement
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louise001Author Commented:
Hi,
Yes, that would be interesting. All along my colleague was maintaining the issue lay with SQL Server, when it seems it didn't. I began to think the issue must be with Exchange after examining all the SQL dbmail logs, but I don't have access to the Exchange box myself, and unfortunately I'm not really in a position to ask for any further information. But thanks again for your help.

Louise
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louise001Author Commented:
I've marked my own comment as a solution because it contains essential information about a setting in MS Exchange 2010 SP1.
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zrieckenCommented:
I was having the same problem and our Exchange Admin when in to the distribution group in Exchange and unchecked the require authentication and it started working.

Thank you very much for the help on this one!
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