Originally Posted by doctortt
We're going to install Exchange SP2 on our exchange server. In addition, we will install Exchange SP2 on the ESM of BES. I want to find out whether it will break any send as permission of the bes service account? The BES service account is a regular domain user.
It's been a while since we did that but I think it's ok, iirc it was a patch and not SP2 which broke sendas. Be aware that if you just applied the Exchange security patch to your Exchange servers last week, the SP2 CDO and MAPI32 dlls are different and may be downgraded bythe SP2 application. If you have applied the security patch, check your file versions on your exchange server after applying SP2. After the security patch the versions should be 6.5.7654.12 so if you applied it and they aren't at that after SP2, re-apply the latest security patch.