VPS. We send email thru 3rd party via DNS Zones. Blacklisted IP
Our VPS hosting account hosts 5 domains. The IP address associated with our hosting (70.39.250.251) is now blacklisted by Barracuda and another listing entity.
All email for all our hosted domains have MX records we have always pointed out to a 3rd party email service.
We do not (as a company) ever send mass email.
The reason given for blacklisting is "bad reputation" due to "spam".
What--if anything--actions can I take via AMP/cpanel to lock down security and prevent nefarious actors from sending email through our account. I am NOT SAYING that this is what I believe is happening. I only want to get advice on tools available to me that you could recommend that would dissuade bad actors from sending mail under our account.
Also, could it be that another VPS is hosting on the same IP, and is causing this blacklisting issue?
All email for all our hosted domains have MX records we have always pointed out to a 3rd party email service.
We do not (as a company) ever send mass email.
The reason given for blacklisting is "bad reputation" due to "spam".
What--if anything--actions can I take via AMP/cpanel to lock down security and prevent nefarious actors from sending email through our account. I am NOT SAYING that this is what I believe is happening. I only want to get advice on tools available to me that you could recommend that would dissuade bad actors from sending mail under our account.
Also, could it be that another VPS is hosting on the same IP, and is causing this blacklisting issue?