I Am Having Problems Sending Emails. I've Check The Address, Til Having Problems

I hope you can help me sooner than the 10 minutes the website asked me to wait. A certain email isn't working. I've check the email address and it correctly written, and double checked with the company.

What must I do?

We have determined that the links below may contain an answer to this question. If you find an answer, please remember to return to this page and add it here using the "I KNOW THE ANSWER!" button above. It's that easy to earn points!

Why is "Mailer-Daemon" sending me a "Failed Delivery" message? | Yahoo! Mail Help
..., yahoo.au or yahoo.com.sg), ensure that you've entered that domain correctly. Email addresses that incorrectly end with @yahoo.com won't automatically be re-routed to the country...: Do not use "www." when sending messages to email addresses. The "www." is for website URLs, not email addresses. Accessing Yahoo! Mail Composing & Sending Emails Managing Your ...
Troubleshooting: Access, Log-in, Sign-in, Can't Send Email, Can't Receive Email Issues | Yahoo! Mail Help
Make Y! Your Homepage Troubleshooting: Access, Log-in, Sign-in, Can't Send Email, Can't Receive Email Issues Last Updated: July 20, 2010 There are several reasons why ...Issues: How do I send an email? How can I stay in my Yahoo! Mail account and send email from another email address? I'm having problems sending mail in my POP3 email client. What can I do? Can I send a birthday e-card or comment to a...
I'm having problems sending mail in my POP3 email client. What can I do? | Yahoo! Mail Help
I'm having problems sending mail in my POP3 email client. What can I do? Last Updated: August 03, 2010 The Yahoo! Mail SMTP server requires ...Outlook Express. For more information, please visit the Symantec web site . If you've tried the above steps and continue to have problems, your ISP might not allow its users to send messages with other companies' SMTP outgoing mail servers. If you're...