Tag: Blacklist

RBL

How to Delist IP from Hotmail, Live, Outlook Blacklist

Note: Before you try to request removal, be sure to analyze your server to find out why you were listed in the first place. You have to fix the issue or they will just list your server again. Do not try to get removed from the blacklist if you have not found the source of …

RBL

How to Remove IP from Gmail blacklist

If you are blacklisted, your email will be rejected with a 421 or 550 SMTP error. You can spot this in your email server’s logs: Example of a 550 Error: Remote_host_said:_550-5.7.1 Our_system_has_detected_an_unusual_rate_of unsolicited_mail_originating_from_your_IP_address. _To_protect_our users_from_spam,_mail_sent_from_your_IP_address_has_been_blocked. Please_visit_http://www.google.com/mail/help/bulk_mail.html _to_review_our_Bulk_Email_Senders_Guidelines Example of a 421 Error: 421-4.7.0 unsolicited mail originating from your IP address. To protect ourn421-4.7.0users from spam, …

RBL

How to Remove Your IP from Yahoo Blacklist

Like Senderbase.org, Spamhaus, Spamcop and other public real time blacklist (RBLs), you cannot simply lookup an IP at Yahoo! to see if it is blacklisted. You will need to determine the same using the bounce back message or error message at server logs like : 421 4.7.0 [TS01] Messages from <1.2.3.4> temporarily deferred due to …