I am using Release 6.0.6_GA_2324.RHEL5_20100406144520 RHEL5 FOSS edition.
I'm trying to get SPF working. It looks like it should be enabled by default, but I don't see any of the SPF messages in the zimbra.log, nor do I see them in the email header's X-Spam-Status section. The following was taken from a gmail message since I know gmail uses SPF...
X-Spam-Status: No, score=-3.498 tagged_above=-10 required=4
tests=[BAYES_00=-2.599, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-1,
Seems like if it was working there should be an SPF_* item in the spam status line.
(perl -e 'require Mail::SPF') returns nothing, so the module is installed. The spamassassin files show lots of SPF entries.
From what I can tell, it should be working, but I don't believe it is.
If anyone has any ideas on what to look for, or a more definitive way to test it, please let me know.