nanog mailing list archives

Re: The block message is 521 DNSRBL: Blocked for abuse

From: Jean-Francois.TremblayING () videotron com
Date: Wed, 18 Sep 2013 13:47:57 -0400

Our mail server IP address is 74.112.99.25.  Is it possible they

are blocking us based on old information from the previous IP 
address block owner?

Quite likely, yes.


https://www.arin.net/resources/whowas/

Found it to be of use for this type of question. Registration required. 
Geolocation information often needs updating for these "recycled" ranges. 

/JF

Current thread:

The block message is 521 DNSRBL: Blocked for abuse NANOG (Sep 18)
- Re: The block message is 521 DNSRBL: Blocked for abuse Michael Schuler (Sep 18)
- Re: The block message is 521 DNSRBL: Blocked for abuse John LeCoque (Sep 18)
  - Re: The block message is 521 DNSRBL: Blocked for abuse Rich Kulawiec (Sep 19)
- Re: The block message is 521 DNSRBL: Blocked for abuse Bill Woodcock (Sep 18)
  - Re: The block message is 521 DNSRBL: Blocked for abuse Jean-Francois . TremblayING (Sep 18)
- Re: The block message is 521 DNSRBL: Blocked for abuse Carlos Kamtha (Sep 18)
- <Possible follow-ups>
- RE:The block message is 521 DNSRBL: Blocked for abuse Timothy Metzinger (Sep 18)
  - Re: The block message is 521 DNSRBL: Blocked for abuse Andrew D Kirch (Sep 18)
    - Re: The block message is 521 DNSRBL: Blocked for abuse Tammy Firefly (Sep 18)
    - Re: The block message is 521 DNSRBL: Blocked for abuse Andrew D Kirch (Sep 18)
    - Message not available
    - Re: The block message is 521 DNSRBL: Blocked for abuse Andrew D Kirch (Sep 18)
    - Re: The block message is 521 DNSRBL: Blocked for abuse David Miller (Sep 18)
    - Re: The block message is 521 DNSRBL: Blocked for abuse Tammy Firefly (Sep 18)
    - Re: The block message is 521 DNSRBL: Blocked for abuse Tammy Firefly (Sep 18)
    - Re: The block message is 521 DNSRBL: Blocked for abuse staticsafe (Sep 18)

(Thread continues...)