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Exchange 2010 / Outlook 2007 Sending Mail Issue

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Last Modified: 2013-11-29
good day everyone,

got the weirdest thing going on with our Exchange 2010/Outlook 2007, after migrating our users from Exchange 2003 to Exchange 2010 we started getting the following error in Outlook 2007:


Task 'BCM - Sending' reported error (0x800CCC80) : 'None of the authentication methods supported by this client are supported by your server.'

We do plan on using SSL for our OWA but it's not deployed as of yet. This happens not to the main SMTP account but the secondary account that is set up as a POP account (not POP server account) it's just an additonal send mail account the user has access to when composing a new email, there is an option where the click on Account and select which domain they want to be seen as when sending email.

if anyone has seen this before any help would be deeply appreciated, i have about 40 user that are not able to send from their second account. thank you.

Regards,

ITProfessional120

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