mail server blacklisted

We are getting this error sending mails from asp.net page:

SpamCop.net - Blocking List ( bl.spamcop.net )

Ticket: RS #DMQ-97557-208

This ticket is open almost 3 hours

someone is review this issue? I have no answer, no fix,… and it is 4 hours after I sent my first ticket

This is not a mailserver. Please use port 587 in your code to get around this problem.