I see in one mailbox in emc of exchange 2010 which is mail non  universal distribution group

there are few members in it ,

sometimes these members get emails sometimes they don't get.

should I change to mail universal distribution group

what is the difference between mail universal distribution and non -mail distribution group

if I need to change should I change in EMC ora ctive directory
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Jose Gabriel Ortega CastroCEO Faru Bonon IT - EE Solution ExpertCommented:
Mail Universal group: it's a group that can be emailed from anywhere in the organization (other sites and virtually anywhere from the internet as well, if configured).

Universal Group, it's mean to manage permissions. So it's a universal group that can have people from 2 different ADs in the same forest, for example. Stand to manage access to resources, like RDP or shared folders.
pramod1Author Commented:
so cant figure out why users in that mail non universal group are not receiving emails
pramod1Author Commented:
it says global distribution group in active directory

this group is in different AD but under same forest
Jose Gabriel Ortega CastroCEO Faru Bonon IT - EE Solution ExpertCommented:
you can check on exchange logs using get-messagetrackinglog cmdlet:

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