Since almost three or four months, I have not been able to send out email from my yahoo mail. But I can receive mails. The "message error" I usually get is "failed to send message". Can somebody please help me out? Thanks.

goodnature:
Since almost three or four months, I have not been able to send out email from my yahoo mail. But I can receive mails. The "message error" I usually get is "failed to send message". Can somebody please help me out? Thanks.

Can’t send: If messages sent from Gmail are
being rejected and you’re receiving a bounce
email, check out this email authentication
help article to modify your SMTP sending
settings to fix this issue.
Note: When updating the SMTP sending
settings for a Yahoo.com account, change the
default server name to smtp.mail.yahoo.com.
Refer to Yahoo help page for more
information.