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justin1981's avatar
justin1981
Copper Contributor
Jan 24, 2020

New Distribution List Group won't receive emails from external address

I am having trouble getting a new Distribution List group to work properly.  I have setup in the admin portal under groups the distribution group email/alias, etc, and have checked the option "Allow ...
admin
exchange
office 365
ChrisWebbTech's avatar
ChrisWebbTech
MVP
Jan 24, 2020
Also how is your mail routing? Are you hybrid? If so you can't create a distro in 365 only and it work from external since your front end devices routing through onprem won't know about it, but internally it will work because it doesn't leave the 365 mail servers. Something like that could be why, how is your end to end routing for mail coming into your o365 exchange instance, mx go on prem through a device to onprem front end into 365 or anything like that?
  • justin1981's avatar
    justin1981
    Copper Contributor
    Jan 24, 2020

    ChrisWebbTech  I have no idea... but I have 3 other distro lists setup in the same manner, and they work just fine.  Literally all have the exact same settings.  The other 3 receive mail from external addresses with no problem. It has been a year or so since I set those up, but I just don't recall it taking more than a few minutes to work once set.  It has been the better part of a day at this point and still not working.   

     

    I am happy to check some settings if you have the patience to tell me how to determine how my mail is routed, but I am not an IT guy, just a small business guy with no IT support :).

    • ChrisWebbTech's avatar
      ChrisWebbTech
      MVP
      Jan 24, 2020
      well, first thing I would check, those groups that work, are they on your on-prem Active directory server in the same OU as the one you just created? Assuming you have an on-prem AD server. That's the first place I would check / find out, cause if you do then your mail may be routing still on-prem somehow. If everything is 365 then not going to be the issue at all.
      • justin1981's avatar
        justin1981
        Copper Contributor
        Jan 24, 2020

        ChrisWebbTech I am not exactly sure how it is configured.  We have a virtual server that is hosted offsite, but that would be the same as on prem?  But the source for my users is all 'Windows Server AD'. I attached a screen of the groups.  efax is the new one that is not working... but all show a source of 'cloud'.

         

         

         

        Here is a snip of the bounce back I get, not sure if that helps anyone. 

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