[squid-users] Webmail/round robin dns problem

We're having a problem with an external webmail site that uses round robin
dns:

> webmail.domain.com
Server: 10.51.#.#
Address: 10.51.#.##53

Non-authoritative answer:
Name: webmail.domain.com
Address: 12.145.#.5
Name: webmail.domain.com
Address: 166.73.#.139
Name: webmail.domain.com
Address: 12.145.#.56

Bringing up the original webmail site works fine, but a user's session gets
bounced between
The different webmail servers during authentication.

Thu Sep 4 13:50:53 2008 280 10.52.15.128 TCP_MISS/302 228 GET
http://webmail.domain.com/ username DIRECT/12.145.#.56-
Thu Sep 4 13:51:39 2008 45424 10.52.15.128 TCP_MISS/200 281989 CONNECT
webmail.domain.com:443 username DIRECT/12.145.#.56 -
Thu Sep 4 13:51:39 2008 44735 10.52.15.128 TCP_MISS/200 302531 CONNECT
webmail.domain.com:443 username DIRECT/12.145.#.56 -
Thu Sep 4 13:51:39 2008 44739 10.52.15.128 TCP_MISS/200 180145 CONNECT
webmail.domain.com:443 username DIRECT/166.73.#.139 -
Thu Sep 4 13:51:39 2008 44739 10.52.15.128 TCP_MISS/200 175494 CONNECT
webmail.domain.com:443 username DIRECT/12.145.#.5 -

Is this a Squid DNS caching problem? Is it a problem with the webmail site
not maintaining a session between the proxy server and the mail server? Is
there a way to have the Squid proxy use a consistent IP address for a URL
instad of a new DNS lookup? We're running squid-3.0.STABLE6.

Thanks,


 Mark Krawec mark_at_krawec.net
Received on Fri Sep 05 2008 - 21:04:14 MDT