The exact text of error: "Your server IP address is in the spamcop database, bye". I can't tell the IP because it's not noted in the error message.
I'd like to concretize the situation:
We are the company witch have the own pop3\smtp server and most of our remote objects use the dial-up connection to the internet, and mail works correctly for them. But some of our remote objects use mobile phones to connect to the internet by gprs, and when they try to send the mail they get that error.
And what is going to change if I call the gprs provider and try to know the IPs pool?