Remote host said: 554 5.7.1 DNS Blacklisted


EQ Forum Admin
Staff member

Did you get the error 554 5.7.1 DNS Blacklisted?

- Do an RBL check of your IP address at MX Toolbox
- If you are not listed there, contact the destination and ask for more information including asking if you are on their in-house blacklist
- Verify that your server is not and has not recently be used for spamming / backscatter, if so fix the problem before you try and delist your IP address