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Delivery to Distribution Groups fails

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Delivery to Distribution Groups fails - 11.Feb.2007 2:28:37 AM

t0ta11ed

Posts: 288
Joined: 2.Feb.2007
From: Mars
Status: offline

I have a problem test sending mail to distribution groups from outside using telnet. Using a from address that exists on the server, I get NDRs reporting an authentication issue:

Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you.

#550 5.7.1 RESOLVER.RST.AuthRequired; authentication required ##

The default recieve connector is set to allow anonymous users for inbound internet delivery, so I'm not sure what the issue here is.

< Message edited by t0ta11ed -- 11.Feb.2007 2:35:02 AM >

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RE: Delivery to Distribution Groups fails - 13.Feb.2007 11:16:58 AM

tjdougherty

Posts: 3
Joined: 13.Feb.2007
Status: offline

I ran into this this AM and figured it out- I came back to your post to show the answer-
This is a 2007 Exchange box-

Seems that under each distribution list address, under "Mail Flow Settings" "message Delivery Restrictions" there is a check box that is defaulted to "Checked" set to require Authentication. I unchecked this for all of the distribution mailboxes

(in reply to t0ta11ed)

Post #: 2

RE: Delivery to Distribution Groups fails - 13.Feb.2007 12:54:39 PM

t0ta11ed

Posts: 288
Joined: 2.Feb.2007
From: Mars
Status: offline

That seems to have done the trick. Many thanks, I didn't even think of looking in there. That's some retarded default behavior if you ask me, especially since it doesn't even give you a clue about it when creating the group.

(in reply to tjdougherty)

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RE: Delivery to Distribution Groups fails - 6.Jan.2009 12:27:41 PM

catzodellamarina

Posts: 143
Joined: 26.Feb.2008
Status: offline

Rather than hit each Dist Group one-by-one, does anyone know how to disable this Message Delivery Restriction setting using the Powershell?

(in reply to t0ta11ed)

Post #: 4

RE: Delivery to Distribution Groups fails - 6.Jan.2009 12:52:31 PM

Elan Shudnow

Posts: 897
Joined: 4.Jan.2007
From: Chicago, IL
Status: offline

This should set it for ALL distribution groups:
Get-DistributionGroup | Set-DistributionGroup -RequireSenderAuthenticationEnabled:$false

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Elan Shudnow
Exchange MVP
http://www.shudnow.net

(in reply to catzodellamarina)

Post #: 5