Hello! I used SA2.6x and it works fine. Now I am palnning to upgrade to SA 3.0.2.
And are there any serious differences in local.cf file between SA 2.6.x and SA 3.0.2 Could anyone send me the example of local.cf for SA 3.0.2? Thank you in advance.
As an addition to Loren's comments most of the significant changes are outlined in the UPGRADE document:
http://svn.apache.org/repos/asf/spamassassin/branches/3.0/UPGRADE
The list isn't all-inclusive, but does cover the very significant change from the use of subject_tag and rewrite_subject, to a more general rewrite_header option, along with the other more important bits.