"550- This Domain is Blacklisted, Consult Your Postmaster Error" Message When Sending an E-mail Message to a Virginia Tech Mail Account
Time to Complete (in minutes): 5
- When I try to send a message to a VT Mail address, I receive the error message "550- This domain is blacklisted, consult your postmaster." What should I do?
Contact 4Help by using the Help Request Form (http://4help.vt.edu/) or by calling (540) 231-HELP (4357). Explain that you are receiving an error message stating that the domain is blacklisted when you send or receive VT Mail messages.
The domain or IP address either from which or through which you send mail may be blocked from sending or receiving messages to VT Mail addresses.
For advanced users:
The following is an example of the full error message:
Example: A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
SMTP error from remote mailer after MAIL FROM:
There are two solutions you can try:
- If you are using your VT Mail account, you may also be using a different Internet Service Provider (ISP), such as Adelphia, NTC, or Verizon rather than Virginia Tech. If so, you must change your email client configuration. To find out which outgoing mail server you must use, contact your ISP.
- If your domain is not being blocked, it is possible that your ISP is using a reverse DNS pointer or using a mail relay will resolve the problem: