Dear Oswald, list,

* Oswald Buddenhagen <[email protected]> [2016-03-07 09:45]:
> On Sun, Mar 06, 2016 at 08:59:21PM +0100, Peter P. wrote:
> >     * OK [CAPABILITY IMAP4rev1 STARTTLS LOGINDISABLED] GroupWise Server
> >     >>> 1 STARTTLS
> >     1 OK Begin TLS negotiation
> >     >>> 2 CAPABILITY
> >     * CAPABILITY IMAP4rev1 AUTH=PLAIN AUTH=XGWTRUSTEDAPP UNSELECT
> >     2 OK CAPABILITY completed
> >     >>> 3 LOGIN <user> <pass>
> > [then after some time]
> >     IMAP command 'LOGIN <user> <pass>' returned an error: NO LOGIN 
> > GroupWise login failed
> > 
> > Every third time or so I would get beyond that point with
> >     3 OK LOGIN completed
> > and so on and so forth.
> > 
> > Is there anything I could try to get more stable logins? Is it me,
> > mbsync or the mail server?
> > 
> to me it seems that the server forgets to internally re-enable LOGIN
> after TLS negotiation despite reporting that it has done so.
Thank you for this idea!

> you can try UseIMAPS to work around that apparent server bug.
Which sadly didn't help.

> you can also try AuthMech PLAIN when you upgrade to isync 1.2.1 from
> experimental (or build it yourself).
I did build it myself but, witch AuthMech PLAIN in my config's
IMAPAccount section, it still doesn't work. I am now getting:
        [...]
        Connection is now encrypted
        Logging in...
        Authenticating with SASL mechanism PLAIN...
        IMAP command 'AUTHENTICATE PLAIN <authdata>' returned an error: NO
        AUTHENTICATE GroupWise login failed

cheers, 
P

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