Hi All,
Right now we stopped the previous Incoming mail server that we configured before, now we are trying to change all the incoming mail ids to the new domain, so when we are trying to add incoming mail via SECURE_POP It is getting a "Connection refused" Error. Here we tried with organization Outlook mail IDs.

We tried with Gmail, Yahoo, and outlook as well but appeared same error
Could anyone help us what would be the reason for this?