I recognized that recipients couldn't receive my companies mails. I think that our server or domain is in blacklist. After searching about blacklist, I recognized that my IP is not in any blacklists([login to view URL]), however my domain [login to view URL] is inside some blacklists. Could you write your solution method when bidding to this project please.
Note: Our first domain is "[login to view URL]" but we bought "[login to view URL]" later. We are using gmail infrastructure in our .......@[login to view URL] & ......@[login to view URL] mails.
Best regards,
Hi,
Do not use Domain and IP while listed in blacklisted. it may make situation worst.
You need to Check your server's MTA log files for detailed reason of Email delivery failure.