SpamAssassin users with certain configurations may find that messages they receive are mistakenly flagged as spam coming from open relays. The problem, discussed in more detail on the Use Perl site (along with a fix), appears to be caused by a distributed denial of service attack on open relay blacklist maintainer Osirusoft, who is now returning back every IP as a spam source when queried.

Posted by Justin at 8:22 PM PDT — Tags: email, spam