The process of creating a distribution list and making it receive email from all senders (local and external) wasn’t a big deal in Exchange 2003. But things changed in Exchange 2007 and 2010, causing external senders to get this error:
#< #5.7.1 SMTP; 550 5.7.1 RESOLVER.RST.AuthRequired; authentication required>
By default, Exchange 2007 and 2010 allow only authenticated users to send to distribution lists. To change this behavior, use one of the following methods:
1- Run this command from the Exchange Management Shell (EMS) to disable the option Require that all senders are authenticated
Set-DistributionGroup_Your_Distribution_List -RequireSenderAuthenticationEnabled $False
Or
2- Open the Exchange Management Console (EMC)
- Locate the distribution list in question
- Right-click on it and select Properties
- Open the Mail Flow Settings tab
- Select Message Delivery Restrictions
- Open the Properties tab
- In the Message Delivery Restrictions window, disable the option Require that all senders are authenticated
Thanks for this. This is an issue I am faced with now. However, due to the extreme amount of DL’s that we use I would like to know if this is possible to do at the OU level, so that all DL’s would be changed.
Hi Sir,
I have installed exchange server 2010 i can send emails to external emails but cannot revive from them i checked receive connectors and also these correct but still cannot receive is their any solution please let me know.
Sincerely
M.Ayaz
@Dennis,
I know this is a bit late, but you can do what you are trying with this:
Get-DistributionGroup -OrganizationalUnit domain.compathtoOU | set-distributiongroup -RequireSenderAuthenticationEnabled $False
Greetings:
Is there any way to change the default setting in Exchange so new distribution lists do not require authentication? We create new distros regularly for our users, and having to uncheck this option every time is inefficient, as 90+% of our distros need to receive mail from outside senders.
Reis