Outlook 2007: None of the Authentication Methods Supported By This Client Are Supported By Your Server

Can’t send from certain locations and keep having to turn on/off outgoing server SMTP Authentication in outlook 2007? You might see this error too: “None of the Authentication Methods Supported By This Client Are Supported By Your Server

My Answer: Goto Email Accounts, Change the problem account, More Settings, Outgoing Server tab, and check outgoing server require authentication and choose “Log on to incoming mail server before sending mail” instead of “Use same settings as incoming” – Outlook 2007 is the first and only mail program to require any of our mail servers to use this setting. So far I’ve only confirmed the problem to be on older sendmail servers. There can be other solutions to this error message but this is one I find most often resolves it.

The Question: As a systems administrator I take calls for our tech support queue and one user called with a really odd problem. Basically it’s detailed here:

http://thepursuitofalife.com/outlook-2007-error-none-of-the-authentication-methods-supported-by-this-client-are-supported-by-your-server/

Like the above link describes the user would have to disable SMTP auth in certain locations (That’s a workaround, not the solution), even though all our servers require SMTP authentication. The above link eventually shares the true solution but it’s buried under many comments thanking the poster for the work around. So I decided to help fellow googlers by making this post.

Update: Comments about other people’s experience with this error made me want to add my further experience with it. I’ve seen this error a lot more often since I first made this post and am convinced it’s really some sort of bug with Outlook 2007. Some people cannot get rid of the error and have to continually switch between “Log on to incoming mail server before sending mail” and “Use same settings as incoming” to keep outlook sending correctly. Whereas if they switch to Windows Mail (The Vista and Windows 7 equivalent of outlook express) they never need to do anything but set ‘use same settings as incoming’ and never have any problem sending. If it’s not a ’2007 Bug’ then it’s definitely a Outlook 2007 incompatibility with certain MTAs – specifically (maybe just older) sendmail – our postfix servers don’t seem to have this bug, but like I just said only 2007 has this incompatibility so you can’t entirely blame sendmail.

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16 Responses to Outlook 2007: None of the Authentication Methods Supported By This Client Are Supported By Your Server

  1. Ray VanRiette says:

    Thanks for the Outlook 07 tip. You are a true gentleperson!

  2. Jenny says:

    This seems to be just badly written error message by MS.

    We solved it by fixing a simple authentication problem – typo in outgoing mail server name – which should have just produced an “authentication failed” message.

    Instead it gave this weird message!

  3. Mike Pote says:

    Thanks…

    I’ve been googling the same problem and most sites are just clueless answers and denials from Microsoft MVPs that the problem is with Outlook 2007.

  4. Bob says:

    You are not THE god, but you are A god.
    Thanks for the fix.

  5. Alec says:

    Congratulations on your useful info. Thanks a lot!

  6. matt says:

    I followed the instructions from the settings tab in Gmail. I could retrieve but not send email from my Outlook client. The port for outgoing was set to 587 per Gmail’s instructions.

    I used telnet command: telnet pop.gmail.com 587

    I received the same error. So my new Windows 7 machine was blocking the port. I added a new rule at the Firewall to allow this port. Now Outlook 2007 can receive and send email.

  7. stephafly says:

    It worked!! Thank you!!

  8. roland says:

    personnaly it does not work

  9. This fix works with Outlook 2010 Beta as well!
    The beta comes with port settings on 587 for encrypted
    connections and settings as above for outgoing email.
    My POP3 server will only accept them on port 25 and
    when the settings are exactly as above it works perfectly.
    This was a really easy fix, thanks a lot. I looked everywhere
    for some reference to this problem for the 2010 beta but just
    couldn’t get an answer. Thanks again!

  10. Jmk says:

    Thank you very much for the fix!

  11. iara says:

    Thanks a lot! It worked right away… awesome

  12. fabio reis says:

    Thanks for the tip i solve my problem thanks

  13. steve says:

    Thanks!

  14. Raheel Afzal says:

    Thank, It solved my problem.

  15. Manoj says:

    Thank you very much….. It works…..
    really thanks!!!!!!!!!

  16. Sudeera Madusanka says:

    Thank you vary much. it’s done

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