We have a problem with emailing certain people Ie AOL and other compaines, after a few days a bounced mail will come back saying
This is an automatically generated Delivery Status Notification.
THIS IS A WARNING MESSAGE ONLY.
YOU DO NOT NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipients has been delayed
We used to have a POP3 Box which was acting as a relay server, so hence our IP was banned, I have since configured exchange SMTP mail NOT with A POP3 connector, we can recive and send mail fine but some compaines will not allow us, I have checked and had our IP address removed from spamhaus and all the other Spam sites, I have checked my ip address on DNSstuff and its not blocked
Any Ideas would be great, as I am loosing the plot