Can't connect to yahoo server

[Mike Koos]

On Tue, 26 Jun 2012 22:10:17 -0700 (PDT)
Zhansheng Hai <zhansheng_hai at yahoo.com> wrote:

> Hi,
> Now,I am using pidgin IM for my yahoo messenger account, but It
> always returned 'Unable to connect: Connection refused, in addition,
> I have no way to change the information of pager server because it is
> no field for this to my version 2.7.3.

Have you tried updating your version of Pidgin?  The current version is 2.10.4, and the problem you're having sounds like one that's been fixed since 2.7.3 was released.