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Enter Network password POP3 keeps poping up

Posted on 2011-03-24
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Last Modified: 2012-05-11
After creating a new receive connector all the POP3 accounts not working
it is keeps poping up

Could anyone help
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Question by:-MAS
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Author Comment

by:-MAS
ID: 35208766
SMTP rejected a (%4) mail from '%1' with '%2' connector and the user authenticated as '%3'. The Active Directory lookup for the sender address returned validation errors. %5
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Expert Comment

by:Netflo
ID: 35209317
Did you have a previous RECEIVE connector working from the internet before? Or have you added a new one?

Have you restart the MS POP3 service? Possibly restarted the Exchange server?
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Author Comment

by:-MAS
ID: 35212701
I have created a new receive connector.
And there is a connector for receiving email from smart host.

Restarted exchange and tried restarting pop3 service before posting this question
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Assisted Solution

by:Netflo
Netflo earned 500 total points
ID: 35215381
Okay, can you verify that your Client receive connector is still there and none of the settings have been changed.

Your settings should be:

Network: Listening on port 587, receive mail from remote servers - 0.0.0.0-255.255.255.255
Authentication: TLS, Basic, Offer Basic only after starting TLS, Integrated Windows Authentication
Permission group: Exchange Users

When creating the new connector, what was the intended use for the connector? Custom, Internet, Internal, Client or Partner?

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Author Comment

by:-MAS
ID: 35217648
the new connector is to receive emails from another server in the network.i.e. Internal
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Expert Comment

by:Netflo
ID: 35218431
Abbasiftt,

1. Can you please a little more detail on this new connector, what settings have you configured, please attach screenshots if its easier.

I'm a little confused on your network setup, I'd be grateful if you could provide more info on the following;
2. how many Exchange servers do you have?
3. what is the topology of your network?
4. how are your client connected to Exchange? MAPI, IMAP or POP3? What port?

I would like to help, but at the moment I cannot visualise you network or understand how everything is connected.

 
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Author Comment

by:-MAS
ID: 35221015
I have 2 exchange server 2007 and 2010

Attached the screenshot for 2010

Screen.docx
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Expert Comment

by:Netflo
ID: 35221812
Can you provide screenshots on permission groups too.
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Author Comment

by:-MAS
ID: 35222695
attached as requested
Screen.docx
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Author Comment

by:-MAS
ID: 35230387
any updates this is really annoying.
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Author Comment

by:-MAS
ID: 35230396
now I removed one server i.e.ex2007
now only 2010 in production but still showing the popup
please help
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Expert Comment

by:Netflo
ID: 35230729
Just to confirm now, that the clients (Outlook 2003, 2007, 2010) are getting the pop up?

Are they internal or remote?

From the client side, what ports are they connecting on for POP and SMTP? Are they secured?
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Author Comment

by:-MAS
ID: 35308025
within the network all are working fine, I am getting the popup only for branch offices. We are connected to all the branches by data line.

They are not secured but I will but a certificate today and install ecrtifictae.
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Expert Comment

by:Netflo
ID: 35309096
The default install will create self signed certificates, I'm asking this as I want to know are your remote clients connecting via POP on 110 or a secured connection?

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Expert Comment

by:Netflo
ID: 35309138
I also have to note that from the pictures you attached, you have changed all the default connectors to accept anonymous connections, whether this was a move to make it work I personally would advise correcting the permissions on each connector back to defaults, so that you understand what each connector does and what port.

At the moment you've created another connector but you know what other connector this is clashing with, do you get my point?
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Author Comment

by:-MAS
ID: 35339717
Now seems to be ok. I dont know how it become ok.


I appreciate if you can explain how it receive connector works with external POP3 users.
 So that I can understand the concept
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Accepted Solution

by:
Netflo earned 500 total points
ID: 35346709
The receive connector, is typically designated for receiving emails from the internet on an anonymous connection.

Your connectors had a mix of permissions and security settings which were all over the place, I'm pretty sure that you've removed a tick box on the Client Receive or Allow POP connector that has allowed the server to correctly answer on the correct connector.

The following article will provide you with understanding and further reading on what connector is used for: http://www.msexchange.org/articles_tutorials/exchange-server-2007/management-administration/managing-receive-connectors-part1.html
http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/043d12da-23d9-465f-9d0d-e89b72e91756/
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Author Closing Comment

by:-MAS
ID: 35351770
problem solved
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Expert Comment

by:Netflo
ID: 35351814
Great to hear!
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