Why can't I access my mail through my iPhone mail app?

Lora

Why can't i access my email through my iphone? Since Yahoo went down I can't get logged onto my account thru my iPhone. It keeps telling me my id and password are incorrect. It also keeps asking me for my password and won't accept it when i do enter it… Help!
Can't access wireless - Modem is a Linksys Cisco WAG120N. Only 1 laptop can access it? Haven't been able to access wireless on any iphones/ipads/other laptops/blackberrys except my one laptop. Have a Linksys Wireless-N Home ADSL2+Modem Router. Model no: WAG120N. Please can you advise how to fix this - very frustrating.
Can't access to mail server using my Wi-Fi? Hi, i try to open my email on server where my domain is located (216.18… ) and got this message: Oops! Google Chrome could not connect to 216.18… I did it in safari and google chrome. Than i try to do same on my iPhone - same result… But, when I turn Wi-Fi off I got access to this address from my iPhone and from MAC (using cellular connection from iPhone). What it can be? Router? Thanks Server not in my building, it in another state
Can't access my mail account on pc after opening it on iphone? Can't access my mail account on pc after opening it on iphone, the password wizard keeps on asking for secret question( cousin's name) and i can't remember and the alternate email address is not matching, i remember my pet's name and password but not cousin's name.