Forwarding greatly increases the chances that your email will be seen as spam and arrive in the junk box, or worse yet, as destination server-level spam filters can simply eliminate the message without you or the sender’s knowledge because setting up a forwarder can cause your account to become a spam relay.
Due to the nature of forwarders all incoming emails are forwarding whether it is flagged as spam or not. This can cause your domain to be blacklisted by other providers such as Gmail, Microsoft .
Email delivered via forwarders may not 100% reach the forwarded address as well due to rate-limits imposed by the destination address.
It would be better to configure fetch mail if supported.