Domino server can send but not receive mails from outside the domain

HCL Domino Domino Forum
1

Subject: domino server can send but not receive mails from outside the domain

2

Subject: Need information…

a. Is the SMTP Listener Task running on your Domino Server?- Execute the following command & review its output:

sh ta

b. Are there any errors displayed on the Domino Console related to SMTP or DNS?

c. Have there been any recent changes to the Server Document & Configuration Document?

d. Are you using any 3rd-party Spam-filtering or Anti-virus Software?

e. If the SMTP Listener Task is running, try establishing a TELNET session to your Domino Server on Port 25 (SMTP) and manually send a message to yourself. Be sure to record any errors that you encounter other than 501 (syntax) errors:

  1. From a Win32 Command Prompt:

c:> telnet ipAddressOfDomino 25

  1. Enter the following commands, only replacing the lowercase characters. Backspaces will be treated as characters & will not be interpreted as-expected, so try not to make any keystroke errors:

EHLO domainNameOfYourWorkstation

MAIL FROM:somesender@somedomain.com

RCPT TO:yourname@yourdomain.com

DATA

This is a test message.

.

QUIT

3

Subject: RE: Need information…

the smtp is startedI am using Symantec mail security

I can make telnet on port 25

4

Subject: RE: Need information…

I think that you might want to look at your firewall. Is it sending port 25 traffic to your Domino server? Is your MX record pointing to the correct IP Address?

5

Subject: Were you able to manually send a message to yourself?

If so, then follow Gregg’s recommendation to confirm your MX record holds the appropriate IP Address & that traffic is indeed being forwarded to Port 25.