In cPanel 11.34 - the option "Scan outgoing messages for spam" exists in the Exim Configuration Manager. The only issue is, imho, that it doesn't give you the option to choose the scoring threshold. The description is unclear as well, "Scan and reject mail bound for non-local domains that SpamAssassin® classifies as spam." As it stands, who knows if it's going to reject any message with a score of higher than 0.0 (i.e 0.1) or 5.0+, 10.0+? "SpamAssassin™ reject spam score threshold" at the very top of the Exim Configuration doesn't appear to affect this. The default is "No reject rule by spam score" and even with it set to this option, you can still scan and block outbound messages helping to affirm my belief that the two options are distinct and do not affect each other. Without the ability to customize how sensitive the outbound scanner is, this feature is useless. If it has too many false positives we have no way to reduce that and if it's letting a lot of actual spam messages out, we also have no way to affect that at this point.