Can any one advise. I wish to imapsync from a dovecot/sendmail server to zimbra but want to use a single admin account on the zimbra server for importing rather than each users username/password.

here is my script for using each users username and password.

imapsync --authmech1 LOGIN --host1 imap.server.com --user1 support --passfile1 /tmp/secret1 --host2 zimbra.server.com --user2 support --passfile2 /tmp/secret2 --noauthmd5 --useheader 'Message-Id' --useheader 'Message-ID' --useheader 'Received' --nofoldersizes --skipsize --fast --buffersize 8192000 --nosyncacls --subscribe --syncinternaldates

What do I change to replace the users names and passwords with the admin info? thanks