I migrated the users' mail accounts from the old mail server to the new mail server using grommunio-imapsync. So far so good. The old mail server fetched the mails from the provider via fetchmail and the new mail server should do the same. As a test, I set this for a user. Now I have the problem that the new server picks up all existing emails from the provider and not just the new ones. What do I have to do here?
My fetchmail settings are:
set postmaster "postmaster"
set no spam bounce
set properties ""
poll pop3.test.de with proto POP3 user testuser there with password 'XXXXXXXX' is firstname.lastname@example.org here options ssl keep