fetchmail has a problem when there are two return path lines in the mail headers which cause it to use a wrong MAIL FROM in the smtp transaction which causes the mail to stay on the server which ultimately leads to error messages every 5 minutes (my polling interval :)) I've attached a patch I got from the fetchmail-friends mailinglist which should fix the problem. Please include it into the fetchmail-6.2.2 ebuild until this is fixed in a new fetchmail release.
Created attachment 10697 [details] return path patch
Created attachment 10713 [details, diff] patch to ebuild. This is the proposed change to the ebuild so that the patch can be applied to the fetchmail-6.2.2-r2.ebuild
Patch added and new ebuild (-r2) committed, thanks.