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Got "debug smtp: auth ntlm failed" with Exhchange Server

SYREA May 25, 2019

Crowd connect to Exchange Server failed as above. 

How to solve this.

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Nic Brough -Adaptavist-
Community Leader
Community Leader
Community Leaders are connectors, ambassadors, and mentors. On the online community, they serve as thought leaders, product experts, and moderators.
May 25, 2019

This usually means you have given incorrect credentials to the email server.  Check what you have configured in the mail server settings.  With exchange, a common error is to only provide a user name, or an email address - you need to give it the full domain credentials including the domain.

SYREA May 25, 2019

Thanks, Nic.

1、The credential is right(because confirmed in OWA), usually I use mail address, and even try AD\User format;

2、The reason is Exchange 2016 default SMTP in port 25, named as "Default Frontend MAIL", in security setting does not include "Exchange users", check it will works;

3、Another way is create a new "receive connector" in port 587 for kind of these uses.

Thanks, again.

Nic Brough -Adaptavist-
Community Leader
Community Leader
Community Leaders are connectors, ambassadors, and mentors. On the online community, they serve as thought leaders, product experts, and moderators.
May 26, 2019

So you had configured Exchange to reject the login as invalid?  And now fixed that?

SYREA May 27, 2019

1、That's Exchange 2016 default settings;

2、Problem solved now.

Thanks.

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