#860 accepted
Robert Hall

SMTP Error: None of the advertised authentication schemes are supported by MailMate.

Reported by Robert Hall | July 29th, 2014 @ 09:23 PM

Mailmate send fails with the above stated error. Please advise.

More details below:

S: 250-ENHANCEDSTATUSCODES
S: 250-PIPELINING
S: 250-EXPN
S: 250-VERB
S: 250-8BITMIME
S: 250-SIZE 31457280
S: 250-DSN
S: 250-ETRN
S: 250-AUTH GSSAPI DIGEST-MD5
S: 250-DELIVERBY
S: 250 HELP
Error: None of the advertised authentication schemes are supported by MailMate.

Comments and changes to this ticket

  • benny

    benny July 30th, 2014 @ 11:57 AM

    • State changed from “new” to “accepted”

    The problem is that MailMate really does not support GSSAPI or DIGEST-MD5. Only CRAM-MD5 is supported (and various simple types). Note that DIGEST-MD5 is actually depreated and therefore this is essentially about GSSAPI.

    I'll put this ticket in the “accepted” state for supporting GSSAPI, but in my experience few servers actually require it. Your server has probably been configured like this for security, in particular, to avoid usernames and passwords to be sent in clear text, but it would be better if the server required SSL (TLS). For SMTP/IMAP then GSSAPI only protects the authentication step. Everything else is still sent as plain txt. SSL encrypts everything sent between the client and the server.

    Most likely you cannot change the behavior of the server, but I cannot promise support for GSSAPI (and other authentication protocols) soon.

  • benny

    benny August 3rd, 2014 @ 09:10 AM

    It sounds like you should just enable SSL for both IMAP and SMTP in the account settings: Go to “File ▸ Edit IMAP Account ▸ ...” and then review the settings. Maybe GSSAPI is only required when SSL is enabled.

    I've sent you an email as well.

  • benny

    benny July 10th, 2018 @ 12:36 PM

    @Måns: This is rarely requested, but I'll keep it in mind. If I do work on this, would you then be able to provide a GSSAPI test account? (I don't think I currently have access to one.)

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