Why does fetchmail keep retrieving the same messages over and over?
First, check to see that you haven’t enabled the keep and fetchall option. If you have, turn keep off. There are various forms of lossage involving the POP3 UIDL feature that can lead to all your old messages being seen again after a line drop. I have given up trying to fix these, as the UIDL code breaks worse every time I touch it. The problem is fundamental; maintaining and garbage-collecting the right kind of client-side state is just hard. Whoever put UIDLs in RFC1725 and removed LAST should be hung up by his thumbs and whipped with scorpions. The right answers are either (a) live with the occasional breakage, (b) switch to IMAP4, or (c) fix the code yourself and send me a patch. Unless you choose (c), I don’t want to hear about it. This can also happen when some other mail client is logged in to your mail server, if it uses a simple exclusive-locking scheme (and many, especially most POP3 servers, do exactly that). Your fetchmail is able to retrieve the messages, but because the m
