When VPN is on, Outlook emails are rejected

AVG VPN
2

Hi Helen.
This could be caused due to incorrect outgoing email server settings in your email client.
Please click this link for instructions to resolve this issue.

3

Hi Helen.
This could be caused due to incorrect outgoing email server settings in your email client.
Please click this link for instructions to resolve this issue.

1

The following recipient(s) cannot be reached:

      hln.wilkie@gmail.com on 11/02/2020 10:59
            Server error: '550 5.7.1 <hln.wilkie@gmail.com>: Recipient address rejected: Rejected Server [IP: 77.234.40.132 / LOOKUP: r-132-40-234-77.consumer-pool.prcdn.net] in BADLIST as CZ'

If I switch AVG VPN off, it works perfectly.