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ese696's profile

2 Messages

Thursday, May 2nd, 2024 11:05 AM

delist our IP from blacklist

Hello! I found just this way to ask question
We are an international company that helps millions of users around the world find jobs. 

Can you please delist our IP from blacklist?

Error code:
smtp; 553 5.3.0 flph828 DNSBL:RBL 521< my server IP >_is_blocked.For assistance forward this error to

Accepted Solution

ACE - Expert


35.8K Messages

2 months ago

Posting here will not get your IP off the RBL.  Follow the instructions on the rejection message (which you pasted here in part, to wit: "For assistance forward this error to")

When writing:

  1. Include a rejection NDR verbatim
  2. Write an e-mail that looks like it was written by a human, not auto-generated by some SPAM bot
  3. Mention when this issue started (if you've been able to send e-mail before)
  4. Discuss your history with the IP: how long you've had it, any situations where you may have allowed spam and how you corrected that issue so it no longer occurs
  5. Aver your commitment to not allowing SPAM to be sent via your server
  6. Do not use your e-mail server to send this e-mail.

If they haven't responded to your e-mail in 3-5 days, request an update... but no more often than every 3-5 days.

2 Messages

2 months ago

Thanks a lot! 
Have a nice day!

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