CNAME changes
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lunes, 13 de febrero de 2012 22:19
We are getting prepared for BPOS transition to Office 365 this weekend. I have been going over all the check lists and reading the forums.
I have read changing the CNAME before the move is ok: http://community.office365.com/en-us/f/148/p/20239/94774.aspx#94774
Don’t change the CNAME until the transition is done: http://social.technet.microsoft.com/Forums/en-US/bpostransition/thread/58f06061-f396-414c-8316-b99b3f922fb7
Change the CNAME during the transistion:http://social.technet.microsoft.com/Forums/en-US/bpostransition/thread/82de4431-62c2-4e43-9ced-05f77bfbc0d7
Why can't someone change the checklist so everyone can get the correct info in one place instead of roaming the forums and net in search of the answer and finding different answers? The checklist is about as helpful as a screen door on a submarine. I honestly can’t understand why it’s so poorly written.
I have also seen 2 or 3 different answers on which plan you get moved to.
So when do I changed the CNAME? I am leaning towards when the transition is complete.
Todas las respuestas
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martes, 14 de febrero de 2012 14:41
I would like to know this as well. There have been reports from various admins which one works and which one doesn't.
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jueves, 16 de febrero de 2012 21:59
So, the official answer is that it IS ok to set up the CNAME prior to transition since Outlook SHOULD use the local XML file to redirect AutoDiscover requests for BPOS.
That being said, the reason I've indicated not to change until the transition weekend or immediately after transition is that, if Outlook's request for AutoDiscover information times out for whatever reason (or can't access it due to not having the SSO client installed), it will default to normal DNS lookups. If this happens after you have changed the autodiscover CNAME to point to Office 365, the users will hit the wrong environment and get pop-ups/credential prompts and cause general confusion and problems for your helpdesk.
The timeframe that you perform this is also determined by how long it takes your DNS provider to update your records. Some, like GoDaddy (from my personal experience), occur almost instantly, but others can take several days or a special request submitted weeks in advance.
If you want a VERY thorough transition guide, check out this doc: here
Have a great day,
Dan
www.insecurityinc.info
- Propuesto como respuesta Daniel Trautman jueves, 16 de febrero de 2012 21:59
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