Using SLES11, squid 2.7, NO TRANSPARENT PROXY, and work fine.
Now i need permit a some users only acces to a pop from external mail
(outgoing mail authenticated)
you are VERY welcome to hang out here and see if one of the openSUSE
volunteers [we here are part of the openSUSE Community -=welcome=-]
can give you some good tips (someone probably can), but in fact your
commercial/enterprise SLES is supported by Novell and their forum…