Disabling client IP reverse DNS?
sbalmos at members.simunex.com
Tue Nov 22 16:04:36 EST 2005
Ken Murchison wrote:
> Scott Balmos wrote:
>> Hi all,
>> I know in a virtual domain setup, if a user connects with an
>> unqualified username, the server does a reverse DNS lookup on the
>> *server's* incoming connection IP, to determine a default virtual
>> domain name.
>> But how do I disable Cyrus from doing a reverse DNS on the *client's*
>> IP that they're connecting from? Connections to my mail server from
>> home are taking very long because of a reverse DNS lookup being done
>> on my home IP. This fails because my stupid cable Net ISP doesn't
>> know how to run DNS properly. :)
> Set the 'virtdomains' option to 'userid' instead of 1/yes/on.
This does not solve the situation. I am not in a virtual domain setup.
But even with the noted change, the system continues to attempt a
reverse DNS on the *client* IP.
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