Trying to figure out why I'm getting errors on authentication via email_smtp using lasso9.1

It appears from the log that email_smtp is trying to use the SASL LOGIN authentication method and not the SASL PLAIN authentication method that my server expects. Is this expected behavior? and is there a way to switch other than running all the smtp commands manually?

Thanks

Tim Taplin

ps. here's a snippet from my log

Failed connection from lasso:
Oct 4 06:03:03 mini postfix/smtpd[78534]: connect from unknown[**mypublic IP**]
Oct 4 06:03:03 mini postfix/smtpd[78534]: setting up TLS connection from unknown[**mypublic IP**]
Oct 4 06:03:03 mini postfix/smtpd[78534]: Anonymous TLS connection established from unknown[**mypublic IP**]: TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)
Oct 4 06:03:03 mini postfix/smtpd[78534]: warning: unknown[**mypublic IP**]: SASL LOGIN authentication failed: Invalid authentication mechanism

successful connection from Apple Mail
Oct 4 06:01:55 mini postfix/smtpd[78551]: connect from unknown[**mypublic IP**]
Oct 4 06:01:56 mini postfix/smtpd[78551]: setting up TLS connection from unknown[**mypublic IP**]
Oct 4 06:01:56 mini postfix/smtpd[78551]: Anonymous TLS connection established from unknown[**mypublic IP**]: TLSv1 with cipher AES128-SHA (128/128 bits)
Oct 4 06:01:56 mini postfix/smtpd[78551]: 5F5E866BCC2: client=unknown[**mypublic IP**], sasl_method=PLAIN, sasl_username=taplin@accesstelluride.com


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