DNSRBL[dot]net Error?

Discussion in 'Server Operation' started by Trimilur, Apr 5, 2021.

  1. Trimilur

    Trimilur New Member

    I get from basically all incoming providers the error code:

    554 5.7.1 Service unavailable; Client host [***] blocked using dun.dnsrbl.net (http://dun.dnsrbl.net/)

    If i disable dun.dnsrbl.net everything works fine. Does anybody know of any current errors?
  2. Trimilur

    Trimilur New Member

    The website actually looks offline as well
  3. Th0m

    Th0m ISPConfig Developer Staff Member ISPConfig Developer

    Seems like they forgot to renew their domain name and now every query tells you the sender is blacklisted. So (temporarily) disable it.
  4. Jesse Norell

    Jesse Norell ISPConfig Developer Staff Member ISPConfig Developer

    You might also consider switching to weighted rbls so it doesn't block mail the next time it happens. Eg. Use postscreen at mta level, and scored rbl results is spam scanner.

Share This Page