Dear Wiki user,
You have subscribed to a wiki page or wiki category on "Spamassassin Wiki" for change notification.
The following page has been changed by JustinMason:
http://wiki.apache.org/spamassassin/OpenDnsAndUribls
The comment on the change is:
add Jeff's text with a few mods
New page:
= I'm using OpenDNS and seeing SURBL or URIBL rules firing on non-spam =
[http://opendns.com/ OpenDNS] is a service that changes the responses to some DNS
queries in order to prevent users from visiting spam, phishing,
etc., sites. It also has a "typo correction" feature that directs
mistyped domain names to custom sites controlled by OpenDNS
instead of sites controlled by typosquatters, phishers, etc.
When using SpamAssassin with an OpenDNS nameserver it's important to
disable the typo correction feature in OpenDNS, or the responses to
non-matching SURBL or URIBL queries will be rendered incorrect.
The reason is that the OpenDNS nameservers return an
IP address of their own web site in those cases, and that
modified IP address will have an incorrect effect on SURBL/URIBL list
identification that depends on where the bit patterns happen to
be in the modified response.
SURBLs and URIBLs will work with OpenDNS if their typo correction feature is
disabled on servers or clients doing SURBL queries.
Alternatively, consider using non-OpenDNS nameservers on those
systems.
''(thanks to Jeff Chan for this text)''
You have subscribed to a wiki page or wiki category on "Spamassassin Wiki" for change notification.
The following page has been changed by JustinMason:
http://wiki.apache.org/spamassassin/OpenDnsAndUribls
The comment on the change is:
add Jeff's text with a few mods
New page:
= I'm using OpenDNS and seeing SURBL or URIBL rules firing on non-spam =
[http://opendns.com/ OpenDNS] is a service that changes the responses to some DNS
queries in order to prevent users from visiting spam, phishing,
etc., sites. It also has a "typo correction" feature that directs
mistyped domain names to custom sites controlled by OpenDNS
instead of sites controlled by typosquatters, phishers, etc.
When using SpamAssassin with an OpenDNS nameserver it's important to
disable the typo correction feature in OpenDNS, or the responses to
non-matching SURBL or URIBL queries will be rendered incorrect.
The reason is that the OpenDNS nameservers return an
IP address of their own web site in those cases, and that
modified IP address will have an incorrect effect on SURBL/URIBL list
identification that depends on where the bit patterns happen to
be in the modified response.
SURBLs and URIBLs will work with OpenDNS if their typo correction feature is
disabled on servers or clients doing SURBL queries.
Alternatively, consider using non-OpenDNS nameservers on those
systems.
''(thanks to Jeff Chan for this text)''