How are you accessing your email? Exactly what happens when you try to send? Are you getting any error message?
how are you trying to send? im seeing logs for authentication failure (wrong password)
yes to the error message. I recently changed my password as I got an email trying to extort money. I can receive but not send
How are you accessing the email? Are you using a moobile device and a mail app? Or a desktop or laptop computer? A desktop email client like Outlook or Thunderbird? Or just the webmail and a browser? What does the error message say?