May 01 2019
08:43 AM
- last edited on
Feb 01 2023
11:52 AM
by
TechCommunityAP
May 01 2019
08:43 AM
- last edited on
Feb 01 2023
11:52 AM
by
TechCommunityAP
We are experiencing problems with our Office 365 Groups not being able to receive external emails in a Hybrid Environment. We have read countless topics about it as it seems like a common issue, but nothing seems to work for us.
I would be more than happy to supply any information that could get this problem fixed.
We are very frustrated and just need some help!!!
May 01 2019 11:30 AM
Jul 30 2019 10:21 AM
@zrigby Did you ever get this resolved? We have exactly the same problem you described.
Jul 31 2019 08:21 AM
@JamesH50 Yes we did get this resolved, but we did not do it ourselves as we had to use a vendor. I will reach out to them for a detailed explanation, but here is the idea of what they did:
They used a write-back feature in Azure to recreate the Office 365 groups created on the web in our on-site Active Directory.
This made it so that when an external email went through our Exchange Server which serves as a relay, the email address existed and allowed it to then go to Office 365 where the actual group existed and distributed the email.
The reason I am not entirely sure how it works is because in AD the groups are called something like: Name: Group_70b9cd7-6f22-... Type: Distribution Group - Universal Description: {Group Name} Email Address: {Email Address}. There is an attribute labeled: msExchRequireAuthToSendTo that needed to be set to FALSE for some of the groups that still had problems. The groups are also placed in an Admin OU since they wont be used for anything except for a relay.
If you use some sort of support, maybe this will help then understand what needs to be done. If I can get a better explanation from someone who knows more than me, I will update here!
Jul 31 2019 08:42 AM
@zrigby Thanks for the reply, we worked it out earlier today and came up with a similar answer - we needed some Azure AD P1 licences to enable writeback feature.
We then had to follow instructions here to enable the O365 group to receive external email: https://answers.microsoft.com/en-us/msoffice/forum/all/550-57133/be2b2e38-c528-4752-bd0b-cfaca424090...