If you are sending using your own mail server and you encounter SMTP delivery errors, here are some things to try:
- Check that your Internet connection is still up.
- Make sure that you have entered the correct address, port, username, and password for your mail server. Configuring Direct Mail to send using your mail server
- It is possible that your mail server administrator has set a limit to the amount of email you are allowed to send. See "About rate limits" for more information.
For faster, error-free delivery with no rate limits, try using our e3 Delivery Service.