Dear sirs,
It almost a week we start using our new IP range 220.158.200.0/24 . However, we noticed all IPs (220.158.200.0/22 ) are blacklisted. Including those IPs that have not being used or broadcasted.
We delist it today, tomorrow will blacklisted again. IPs that have not been active also having same problem.
It is causing us too much stress as there are many clients using Symantec mail security and so rejecting our emails.
There is no spam coming out from our mail server, there is no virus on our mail server and no other pc in our network is sending spam nor is infected. Please keep in mind that our mail server is not listed in any worldwide blacklist but your one.
Would you please help me to solve this problem ?
Thank you in advance
Kind regards
Sam Lee