Topic: I cant access web-based programs

Hy guys,

I dont know why, but, i cant access web-bases programs like

http://my_server/ mail or webmail or squirrelmail or roundcube or any others ....

I have tried use https:// but the same way,... dont work..

if i access http://my_server/ ou https://my_server/ only, says;

it works

I belive that is missing some configurations on apache ... but
what i can do now to fix it ??