Why cant i send e-mails?

my emails to out of state yahoo addresses will not go thru-I've tried sending from aol page(my network provider) and from yahoo page but i always get an error message saying thay cant go thru-i can send to friends in my state???????

i have been trying to send my friend emails, some with attachments, but i just keep getting them back undelivered from the postmaster, can somebody tell me why and how to get round it. thank you

I have windows xp. And in my outlook express I receive emails. But I get an error messenge when I try to send emails. It always says one of the recipients was rejected by the server. I checked addresses and they are correct. I have sent to these people...

I am new at sending emails so why is it that everytime I try to send an email it says something about the server cant send email off POP3

I was trying to send email this morning but could not send. It said I am blocked for sending emails. May I know the reason why and how can I resolve this issue?

i just signed in after not using my ymail account for a few days and now everything is different and i have no emails in my inbox(i had over 5,000). where did they go? and i can not send an email or click on anything really. its unresponsive and my emails...

I have a hotmail email thing and so does my sister but she doesn't receive any of the emails i send her. I can send to anyone else and they get them... Why can't she get them and how ...show more

Im trying to send forwarded emails to an http address and cant because theyre saing ive missed on a comma or syntax error and when i check it out theyre wrong ive done all i can do and yahoo still wont send my message yahoos got issues they need to fix...

How can I contact yahoo technical support? I cant send any emails or replying. This is what you can see on the page. Yahoo! Mail found the original email, but encountered problems ...show more