Hello,
I just put a new Postfix with Dovecot 2.4 server on line migrating the
email from Dovecot 2.3. I have discovered a number of clients (all
copiers so far) that no longer authenticate SMTP. Mechanisms configured:
auth_mechanisms = plain login gssapi cram-md5 digest-md5
I found that if I disable all encrypted password methods (some copiers
list them separately with a checkbox) and leave only plain/login on the
client side, then it succeeds. But sometimes it is not necessary. It's
almost as if it only tries once and gives up if it fails. I'm not sure
how it is actually supposed to work. But it worked with Dovecot 2.3. I
did test one account with an encrypted password like "{CRAM-MD5}6e3..."
successfully. But other accounts failed. It almost looks like the
encryption method must be specified on the client side to match the
server before it will work consistently. I know that password
encryption is unnecessary with STARTTLS but I have to live with it now.
I have noticed that Thunderbird configured with encryption silently
falls back to plain/login so I didn't notice a problem.
Regards,
David Koski
[email protected]
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