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Exchange 2010 Client was not authenticated .

Posted on 2013-01-31
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Last Modified: 2013-02-23
Hello all,

I have Exchange 2010 SP2 facing the following issues :-

1- OWA working very Good also can send and recieve without any problems.
2- MAPI Clients from internal facing the following screen and from outside facing  " 5.7.1 Client was not authenticated  "

outlok
3- some times i face the following screen from google .

goog
the following screens applied on my receive connector

1
2
just from 24 HRS i changed my MX record IP also the PTR not updated , Please advice .
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Question by:emiahmad
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Expert Comment

by:Hendrik Wiese
ID: 38842653
Hi,

Please try one of the following.

Option 1:
1. On the authentication tab, try un-checking "Offer Basic authentication only after starting TLS".
2. Restart the Exchange services and test if it works

if option 1 did not do the trick, then do the following:

Option 2
1. Check the "Offer Basic authentication only after starting TLS" that we have unchecked in option 1.
2. Uncheck "Exchange Server authentication"
3. Ones again restart the Exchange services and test if it works

Hope this helps!
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Author Comment

by:emiahmad
ID: 38846499
still the problem !
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Accepted Solution

by:
emiahmad earned 0 total points
ID: 38904662
it's only ISP issues
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Author Closing Comment

by:emiahmad
ID: 38920931
it's only ISP issues
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