Forum Discussion
Email Proxy (Alias) Addresses Suddenly Capped at 200?
I do not believe that article applies because (1) it describes the 2000 and 2003 versions of AD and (2) this change only occurred this month.
I know this because we migrated to O365 in December 2013 with accounts containing more than 300 aliases and without any such complaint. One account went over 400 earlier this year.
I log into the Exchange Admin Center almost daily and this "error" dialog only began appearing this week. There is no other conclusion I can draw except that an arbitrary, possibly accidental and certainly unwelcome policy change has occurred.
I am simply attempting to question this change as I do not believe the full impact was considered. I would like to petition for reconsideration.
MicrosoftThe limits for non-linked multi-valued attributes are dependent on the forest functional level (FFL), but indeed, I don't think Office 365 is at the FFL from the article :). I used that article only to make it easier for me to explain what I'm talking about.
The limit of proxyAddresses was clearly not set by accident and it comes from the need to prevent any object from reaching the limits of non-linked multi-valued attributes, but I agree that it probably is unwelcomed by a few of customers.
Regarding the chances of having this limit removed, as it was in the past, I can say with a great degree of confidence that it won't happen. One of the reasons for which I think it won't happen is that the limit was not introduced by mistake, so the impact was analyzed before introducing it. Another reason is that, at least in your scenario, you can workaround this limit by creating a DG, adding 200 proxy addresses on this DG and make your mailbox a member of the DG.
Best regards!
Nino just posted another comprehensive update on the Answers thread: Read this reply
- Victor_Ungureanu
https://technet.microsoft.com/en-us/library/exchange-online-limits.aspx#RecipientLimits
This article was updated to reflect the change in recipient proxy address limit.
Yes, Nino has promised to get to the bottom of it. Once we have any info I'll reply here as well.
Actually, a PM on the Admin team has http://answers.microsoft.com/en-us/msoffice/forum/msoffice_o365admin-mso_manage/new-limit-on-proxy-addresses-unable-to-delete-old/12b5c44f-c2ed-408f-9dda-fd45b76ba820?page=2&msgId=792847d2-b865-4e69-bb63-b3de869eba5f to the Technet complaint and indicates this it is a valid issue.
Another person has http://answers.microsoft.com/en-us/msoffice/forum/msoffice_o365admin-mso_manage/new-limit-on-proxy-addresses-unable-to-delete-old/12b5c44f-c2ed-408f-9dda-fd45b76ba820?page=2&msgId=f904bc94-bb8a-4f74-8d7f-7c8e1d11f0fe links to Microsoft documents from 2013 indicating email aliases are unlimited.
This may only be a portal programming problem that will be hopefully corrected soon.
