according the link about external pop:
[SOLVED] Fetchmail from other servers (aka account aggregation)
I´ve done all the steps, but I do have problems to send the mails to the simbra-user.
I have created an user, fe: mardoc with the mail-address: firstname.lastname@example.org
I guess, the problem is, that I only have a privat address (FQDN) fe: zimbra.home.lan and I only want to use this server for downloading my external pop-accounts central to this server, where I can access and sync my mails with my laptop. Additional I think, the problem is regarding downloading mail with fetchmail and sending this downloaded mails to the same zimbra-server.
Is there a way, where I can check / trace some log files to find out, where exactly the problem is?
Is there a "new" way to include fetchmail or something else to use external-pop-accounts with zimbra.