Exchange 2010 server ask external contact for username and password

Hi all

I have a weird situation reported from one of my users. Everytime an external contact wants to send my user an email, he/she is asked to fill in username and password by my mailserver. I've never encountered this.

Can anyone please explain why this is happening? Why would my mailserver care about username and password for someone that is not even in my domain?

Here is the message:



  • Edited by cscpj Tuesday, June 16, 2015 9:28 AM
June 16th, 2015 9:12am

Hi

this is not one of my users - this is a guy from another company that tries to send an email to one of my users and gets the message above. Why would my mailserver care about his domain credentials??


  • Edited by cscpj Tuesday, June 16, 2015 10:58 AM
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June 16th, 2015 10:57am

Hello,

Does this issue occur on all the external senders?

Thanks,

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June 22nd, 2015 8:37am

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