Hello,
our server with IP 212.233.250.78 is being constantly blacklisted by Symantec and by no other spam list.
When I use https://ipremoval.sms.symantec.com it gets delisted for a while (day or two) and gets listed again.
The reasons provided are:
The host has been observed sending spam in a format that is similar to snow shoe spamming techniques.
The host is unauthorized to send email directly to email servers.
The mail server sends mainly similary looking notification e-mails to clients.
I am not sure what the errors really mean. What can I do to remedy the problem?
P.S. At the moment the IP is not listed - I delisted it 30 minutes ago.