[Dovecot] is it possible to fetch messages for multiple users using a single account?

Dear list, I am running dovecot with LDAP. Each account has email in form a...@example.com, and messages are stored at /var/vmail/abc/Maildir. This is an external mail server, and I would like to use a cron job to fetch all messages to an internal server which has slow internet connection. It see

[Dovecot] is it possible to fetch messages for multiple users using a single account?

Dear list, I am running dovecot with LDAP. Each account has email in form a...@example.com, and messages are stored at /var/vmail/abc/Maildir. This is an external mail server, and I would like to use a cron job to fetch all messages to an internal server which has slow internet connection. It seem