From: email builder emailbuilder88@yahoo.com
The only hints I can find seem to suggest to remove perl-IO-Socket-INET6, but trying to do so using yum (I don't want to start using another method of package management) tells me that spamassassin is a dependency and will also be removed - obviously undesirable.
If you really want to remove it, use rpm instead. rpm -e --nodeps perl-IO-Socket-INET6 But it will annoy you at every update...
On my Zimbra server (CentOS 5.7), sa works fine. I have spamassassin-3.3.1-2.el5 and perl-IO-Socket-INET6-2.51-2.fc6 installed.
Did you disable IPV6?
JD