With the help of Timo and the fetchmail devs, this issue has now been fixed and will be included in fetchmail 6.3.14. See the post to fetchmail list:I haven't reported this to the fetchmail developers, but I will now that I've confirmed it's their bug.For those interested, I've raised this on the fetchmail list here:https://lists.berlios.de/pipermail/fetchmail-users/2010-January/002183.html
https://lists.berlios.de/pipermail/fetchmail-users/2010-January/002238.html
Thanks, Matt