imtest fails w/ "Authentication failed. no mechanism available"

[OpenMacNews]

hi all,

i've newly built/installed:

        exim-4.43
        cyrus-imap-2.28
        cyrus-sasl-2.1.19

on OSX 10.3.5

plus, i've been moving to MySQL support for vitrual domanis using VExim ...

so, at this point, exim seems to run fine, responding to send-tests, etc. as expected.

when testing cyrus-imap w/ TLS, however, i'm having some issues.  specifically, when i:

        % /usr/local/cyrus-imap/bin/imtest -t "" -m plain -a testuser -p imap testdomain.com

it fails with an "Authentication failed. no mechanism available":

        S: * OK testserver.testdomain.com Cyrus IMAP4 v2.2.8 server ready
        C: C01 CAPABILITY
        S: * CAPABILITY IMAP4 IMAP4rev1 ACL QUOTA LITERAL+ MAILBOX-REFERRALS NAMESPACE UIDPLUS ID NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY SORT THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE IDLE STARTTLS LISTEXT LIST-SUBSCRIBED
        S: C01 OK Completed
        C: S01 STARTTLS
        S: S01 OK Begin TLS negotiation now
        verify error:num=18:self signed certificate
        TLS connection established: TLSv1 with cipher AES256-SHA (256/256 bits)
        C: C01 CAPABILITY
        S: * CAPABILITY IMAP4 IMAP4rev1 ACL QUOTA LITERAL+ MAILBOX-REFERRALS NAMESPACE UIDPLUS ID NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY SORT THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE IDLE AUTH=PLAIN AUTH=PLAIN AUTH=PLAIN SASL-IR LISTEXT LIST-SUBSCRIBED
        S: C01 OK Completed
        Authentication failed. no mechanism available
        Security strength factor: 256

now, i'll bet i've misconfigured something ... but durned if i can find it (yet).  i'm crusing the list, as well, but am not yet familiar enuf with what to even look for.

fwiw, my imapd.conf is:

        admins: testuser
        postmaster: postmaster

        virtdomains: yes

        defaultdomain: testdomain.com
        servername: testserver.testdomain.com

        configdirectory: /etc/cyrus-imap/
        partition-default: /var/spool/imap
        sievedir: /var/sieve
        sieve_maxscriptsize: 32
        sieve_maxscripts: 5

        autocreatequota: 10000
        reject8bit: no
        quotawarn: 90
        timeout: 30
        poptimeout: 10
        dracinterval: 0
        drachost: localhost
        sendmail: /usr/local/exim/bin/exim

        allowanonymouslogin: no
        allowplaintext: yes
        sasl_pwcheck_method: saslauthd
        sasl_mech_list: PLAIN

any/all pointers/suggestions are much appreciated,

richard
---
Cyrus Home Page: http://asg.web.cmu.edu/cyrus
Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html