Major ISP FBL's/WhiteList and Postmaster Support Information

This is a list various isps and what blocks list they use, connection limits, are they part of Validity (Return-Path) and other information that might be helpful You will also find various links to different back loop services. Note most them now go to Validity and might be expensive. We would only recommend if you have a lot of mail volume to those isps if you were to signup for a paid service.

ISP	Postmaster Site	FBL signup	Whitelist Signup	Sender Support	Connection Limits	Sending Limits	Certification services	Blocklists
AOL	Postmaster Website	FBL signup pages	Whitelist Signup	AOL support pagesAOL Postmaster Blog	limit is published on the AOL FAQ page	500 emails per connection 100 recipients per message	Goodmail
AT&T	postmaster pages	does not offer	does not offer	blocking page	no published limits	no published limits	Return Path Certified	Spamhaus Symantec
Bellsouth	postmaster pages	does not offer	does not offer	blocking page	no published limits	no published limits	Return Path Certified
Charter	postmaster pages	does not offer	does not offer		no published limits	no published limits	Return Path Certified	no confirmed
Comcast	postmaster pages	Comcast FBL signup page	does not offer	blocklist removal form	25 connections per IP address	1000 recipients per message	Return Path Certified	Spamhaus ZEN Cloudmark CSI Return Path Reputation Network Blacklist
Cox	postmaster pages	Cox FBL signup page	does not offer	blocklist removal form	5 connections per IP address	100 messages per connection	Return Path Certified	Spamhaus ZEN Invaluement  IvmSIP  DNSBL Invaluement  ivmURI Return Path Reputation Network Blacklist SURBL URIBL
Earthlink	does not provide	Send email to fblrequest@abuse.earthlink.net	does not provide	send mail to blockedbyearthlink@abuse.earthlink.net with the blocked IP in the subject line	does not publish	does not publish	no known certification services
Excite	postmaster website	does provide	does not provide	does not provide	10 per IP		Return Path Certified	use some
Gmail	bulk senders guidelines	does not provide	does not offer	troubleshooting	does not publish		not using any
Hotmail	Postmaster Website	JMRPP signup pages	does not provide a whitelist	Hotmail support pages	based on the reputation	based on the reputation	Return Path Certified
Integra	does not offer	does not offer	does not offer		no published limits	100 emails per address
Mail.ru	postmaster.mail.ru	FBL signup
Rackspace	https://emailsrvr.com/	Rackspace FBL signup page	does not offer	postmaster@emailsrvr.com	very little information available	very little information available	Return Path Certified	has not published
RoadRunner	postmaster site	FBL page	no whitelist provided	do not provide	do not publish	do not publish	Return Path Certified	Cloudmark CSI Spamhaus ZEN Trend-Micro RBL Plus Return Path Reputation Network Blacklist
Terra.com.br		FBL Signup
Tucows	does not provide	Tucows FBL signup page	does not offer	does not provide	very little information available	very little information available	Return Path Certified	has not published
USA.net	postmaster website	does provide	does not provide	IP lookup form	does not publish	does not publish	Return Path Certified	Cloudmark
Verizon	some help	does not provide	whitelist	does not provide			Goodmail Return Path Certified	not known to use
Yahoo	Postmaster Pages	Complaint Feedback Loop	Yahoo! Mail Bulk Sender Form	detailed delivery advice support request form	limit is not published	20 emails per connection reputation based rate limiting	Return Path Certified	Spamhaus XBL Spamhaus PBL

  Data and information provided by http://wiki.wordtothewise.com/ISP_Summary_Information