Each IP has an IP reputation, IP addresses are given a low or negative reputation when they are found to be sending large amounts of spam emails.
IP addresses are given a high or positive reputation when they send legitimate emails. When the IP reputation will drop and it will affect the delivery of emails because you are using the same IP address. Emails may end up in the Junk folder or be rejected until the IP reputation returns to a high status.
There are many tools that provide IP reputation checks as below.
- MxToolbox ( https://mxtoolbox.com/blacklists.aspx )
Talos ( https://talosintelligence.com/ )
It will show you if your domain or IP reputation is rated as Good/Neutral/Bad. Good means there's nothing to worry about. Neutral means there are areas of improvement, Bad means most of your emails are probably not making it to the inbox.
BarracudaCentral ( https://www.barracudacentral.org/lookups )
- MailTester ( https://www.mail-tester.com/ )
Mail-tester will analyze your messages, your mail server, your sending IP. and show you a detailed report on what is configured correctly and what is not.
Jika reputasi IP buruk, lakukan pengecekan antrian email.