Block listed by Spamhaus? Here’s what to do.
Sometimes those IP's may get blocked and listed in the global blacklist databases like spamhaus
People may receive the Non deliver report like below
Here is the steps to delist the blacklisted IP from the database
What is the Spamhaus Blocklist?
The Spamhaus Block List (SBL), or Spamhaus blacklist, is a real-time database of IP addresses that Spamhaus identifies as a spam source according to its listing criteria. More specifically, according to the SBL policy, the list includes IP's that send unsolicited bulk emails or expose unwitting targets to threats.
Why are IP addresses blocked by Spamhaus?
Spamhaus does not block your IP address directly or prevent you from sending mail. Instead, it allows your recipient’s mail server to block your message. Spamhaus enables the mail server to check your IP’s listing on any of the Spamhaus IP blacklists. If the listing exists on those blacklists, receiving mail servers may reject your emails.
few common reason's : Spam trap, Compromised security, Bulk emails.
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