Jan 20, 2023 · Have paid IT professional to rectify this but was advised that a port #25 was blocked and this has since been unblocked by Optus, but still doesn't send emails.

Dec 3, 2013 · In this case you got a message you can work with (resolve the issue and your ip should get unblocked). In our case the IP is in good standing and we have no clue why the emails are being …