SMTP testing with Telnet 'auth config' unseccessful

I am testing SMTP connection with telnet session and get 'auth login unsuccessful'
here is the session output:
250-email server
250-SIZE 10485760
auth config
504 5.7.4 Unrecognized authentication type
auth login
334 VXNlcm5hbWU6
334 UGFzc3dvcmQ6
535 5.7.3 Authentication unsuccessful

What am I missing?
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Dr. KlahnPrincipal Software EngineerCommented:
Since authentication was unsuccessful, some possibilities are:

* The username following the username challenge "VXNlcm5hbWU6" is incorrect or nonexistent.

* The password following the password challenge "UGFzc3dvcmQ6" is incorrect or nonexistent.

* Either the username or the password were incorrectly coded into base64.  Reconvert the username and password from base64 back into plaintext, and see if they match the credentials entered into the server's validation database for that particular user.

Side notes:

The EHLO is missing the sending site's name.  This causes many clients to reject the session ... and perhaps not immediately.  This may also be causing the rejection.

AUTH LOGIN is not secure unless the server is using SSL/TLS session encryption, and then it's still not very secure.  The username and password may be presented in base64, but that's still effectively plaintext.
ivolachAuthor Commented:
base64 credentials are good, the same one are being used successfully to login to OWA
how/where do you encode the sending site's name?
ivolachAuthor Commented:
I have found the answer somewhere else:
Test with the credentials of a user without admin privileges and it works OK.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
ivolachAuthor Commented:
I have found the solution elswhere
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.