Exchange 2007 / 2010 Distribution groups – Not receiving external mail

Written by Allen White on. Posted in Exchange 2007, Exchange 2010

Problem

You have created all distribution groups such as Sales@yourdomain.com, Info@yourdomain.com.and so on, they work fine internally but you cant receive mail from external users.This is becasue by default out of the box in exchange 2007 and exchange 2010, all newly created exchange distribution groups are internal only, we need to enable so that anonymous ( internet ) connections can send email to that distribution group.

 

 

Resolution

To fix this do the following.

1. It would seem that by default Microsoft has decided all distribution lists are enabled for internal mail only. Wise, it would been nice to be asked this when you create the group but oh well!

So we need to enable these groups for external use.

2. First, fire up the exchange management console and go to recipient configuration and then distribution groups.

 Distribution groups - Not receiving external mail

Distribution groups - Not receiving external mail

3. Then select the distribution list you would like to enable, right click it and select properties.

 Distribution groups - Not receiving external mail

Distribution groups - Not receiving external mail

4. Select mailflow settings, then select “Message Delivery Restrictions” and then click properties.

 Distribution groups will not accept mail

Distribution groups will not accept mail

5. We now need to make sure that THERE IS NOT a tick in “Require that all senders are authenticated” Take the tick out and mail will flow externally.

 Distribution groups will not accept mail

Distribution groups will not accept mail

Mail will now flow externally and internally correctly

 
 
Allen White
Allen is a Consultant for ITPS in the North East of England and holds the following accreditations. MCSA, MCSE, MCTS, MCITP, CCA, CCSP, VCP 4,5 and HP ASE, AIS - Network Infrastructure.

ITPS provides strategic IT consultancy, implementation, data centre provision and unified communications, as well as support services and workspace and disaster recovery. If you require a consultation then please contact me via the contacts section or direct on 07931222991, add me on linkedin. https://uk.linkedin.com/in/allenwhiteconsultant0001

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