?
Solved

Office 365 mailbox concurrent connections

Posted on 2013-05-21
2
Medium Priority
?
7,521 Views
Last Modified: 2013-08-13
Hi All,

Quick question I hope.....

We have a prospective new client who may well be migrating from an old Exchange 2003 in house server to Office 365. Currently there are 12 users who do not have their own mailbox and all connect to a shared mailbox which works fine.

I'm sure I've seen somewhere that standard mailboxes in o365 only allow a certain amount of concurrent connections to the mailbox and was hoping someone may be able to confirm and state exactly how many devices/PCs can connect to one mailbox at any one time.

Many thanks in advance!
0
Comment
Question by:PurpleJelly
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 44

Expert Comment

by:Amit
ID: 39185318
According to plan it may vary. Check with MS directly. There are lot of limitation with Office 365. So be aware before moving to it.
0
 
LVL 42

Accepted Solution

by:
Vasil Michev (MVP) earned 1500 total points
ID: 39186911
There are different throttling policies for different types of access (OWA, EWS, PowerShell, MAPI, POP3, etc). Unfortunately, they removed the corresponding commands long ago and we can no longer view these settings, let alone change them. The only information I was able to dug out is this:

http://community.office365.com/en-us/wikis/exchange/throttling-limits-for-office-365.aspx

It is very important to realize that Outlook will use several connections at a time and that the number depends on the mailbox size, folder structure and the number of items in specific folders. Generally, its a good idea to simply create another shared mailbox and move some content.

Another critical point is mobile devices access, especially droids and idevices. Due to the protocol implementation, many of those simply flood the server with too many connection attempts and cause a lockdown. For more info review those articles:

http://support.microsoft.com/kb/2748176
http://support.microsoft.com/kb/2469722

Now, throttling gets significant improvements in Exchange 2013, i.e. the new Office 365, and hopefully the situation will be better there. In the new version, you will also have public folders and the Site Mailbox, so you can work with those instead of using shared mailboxes.



For the situation you are describing, I believe the most important thing is that while shared mailboxes do not consume licenses in O365, only users with Exchange license can actually open them and read/reply to email. So your client might not be happy :)

And if they decide to pay for licenses, those users will have personal mailboxes and you don't have to worry about the throttling.
0

Featured Post

Does Powershell have you tied up in knots?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Check out this step-by-step guide for using the newly updated Experts Exchange mobile app—released on May 30.
Microsoft Office 365 is a subscriptions based service which includes services like Exchange Online and Skype for business Online. These services integrate with Microsoft's online version of Active Directory called Azure Active Directory.
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…
Suggested Courses

801 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question