Performed Exchange 2010 SP3 ugrade yesterday.  All steps completely successfully without errors.  However, clients are now unable to send / receive email.  Outlook/phones/OWA authenticate and connect, but not email is being transported.  I have rebooted and checked logs...nothing.

Any help greatly appreciated.
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MASEE Solution Guide - Technical Dept HeadCommented:
Can you check event viewer for any error?
Post the error/warning if any

Can you telnet port 25 from client PC to the server?
E.g.  telnet 25

Did you start the Transport front end service?

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pscanevitAuthor Commented:
Hi,  I found the issue.  when tech downloaded and installed the SP he placed and extracted on my c: drive.  Transport service stopped due to space on the C: drive.  

All is corrected now.  thank you so much for the offer of help
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