The CPAN module Authen::SASL::Perl uses broken Digest-MD5 authentication up to at least version 2.10. Version 2.10 is included in Debian, Ubuntu and perhaps other linux distributions. 2.12 seems to be correct.
As a workaround, you may prefer to disable auth-digest-md5.
In case of questions, please write to email@example.com.
Last modified: 2010-11-19