Fetchmail problems... keeps downloading the same mail!

[Theatre]

Im having a problem with my Fetchmail.

When i run the program it keeps fetching the same mail everytime.

My fetchmailrc looks like this:
------------------------------------------------------------------
#set daemon 600
#set logfile /home/username/fetchmail.log

poll "mail.server.com" protocol POP3
user "NAME" pass "PASSWORD" is "USERNAME" here
# ssl
# fetchall
keep
# no rewrite
mda "/usr/bin/procmail -f %F -d %T"
------------------------------------------------------------------

I know if im not using keep it will work but i want to use it, it must be a way so fetchmail knows which mail it already has been fetching?

[zombykillah]

My guess is that fetchmail has a problem writing the id-file.

fetchmail.man
https://trac.macports.org/wiki/howto/SetupFetchmail

It should be:
~/.fetchids

So take a look if it exists, and if there are ids inside.
Also check if the user running fetchmail has access to the file.

Commands you may need:
cd ~
ls -al \.fetchids
touch .fetchids
chmod 777 .fetchids

[Theatre]

I just added the command uidl as follows:

#set daemon 600
#set logfile /home/username/fetchmail.log

poll "mail.server.com" protocol POP3 uidl
user "NAME" pass "PASSWORD" is "USERNAME" here
# ssl
# fetchall
keep
# no rewrite
mda "/usr/bin/procmail -f %F -d %T"