We're having some issues with our mail server. Some emails are reaching their target destination just fine, while others are being bounced back with the following message; We don't send bulk mail from this IP address, and a good 50% of our emails are going through just fine. Any ideas? WebDev
Check your logs to see if spam mail is being sent from your server. It could be the result of a compromised script or compromised user. Also, check your IP at mxtoolbox.com to see if it is in any blacklists.
Not showing on the blacklist. Just finding it very strange that the majority of our mail gets sent absolutely fine? WebDev