SMTP Forwarding All Mail To Different Port

[ZandercraftGames]

I am getting an error:
554 Error for mail.<REDACTED>.ca of "Can't send mail - all recipients were rejected: 554 5.7.1 <zander@mail.<REDACTED>.ca>: Relay access denied" If you need help please forward this email to [email protected] or visit <https://forwardemail.net>.
My setup is that my mail server listens for mail from @<REDACTED>.ca emails, but for some reason it seems to be forwarding them to @mail.<REDACTED>.ca. An MX would contain a name of @ and a value of mail.<REDACTED>.ca and would work fine. I have used rollernet.us, but found it to be unsatisfactory as I was losing mail during server downtime. What I need is to forward mail from *@<REDACTED>.ca to my server at mail.<REDACTED>.ca:26. I receive the above error regardless of whether I use a txt of forward-email=mail.<REDACTED>.ca or forward-email=<REDACTED>.ca. I have specified a forward-email-port=26 txt record.

[ZandercraftGames]

The rejection is mailserver side because it is attempting to forward the email to zander@mail.<REDACTED>.ca instead of zander@<REDACTED>.ca. This is because it takes this to mean it is attempting to relay it to an email server accepting for emails sent to @mail.<REDACTED>.ca. If the forward-email record is set to <REDACTED>.ca, the request will time out.