GDY said:
When trying to send emails, I get this message:
550 Stop! You are sending too fast
What can I do to correct this problem?
Means you are violating your e-mail provider's anti-abuse quotas,
especially for a personal-use account which does not support spamming or
bulk mailing. Apparently they limit the maximum number of connections
per minute. You'll have to discuss the problem with your e-mail
provider.
What happens if you wait 2 minutes and then send just *one* e-mail?