MySQL Problems
Multiple definition of `sha1_result
Quick solution: Change all sha1_result functions in Dovecot source tree to dovecot_sha1_result or something. For example:
zsh cd dovecot perl -i -pe 's/sha1_result/dovecot_sha1_result/' **/*.[ch]
More permanent solution: It's a [http://bugs.mysql.com/bug.php?id=13944 MySQL bug]. Try to get them to fix it.
Access denied
Store the password to MySQL with OLD_PASSWORD() function instead of PASSWORD().
[http://www.dovecot.org/list/dovecot/2005-November/010000.html More information here.]