Hi! I am getting "554 No SMTPd here" when i try to telnet to my exchange 2003 from the internet. From the LAN side it is ok. Thanks!

That isn't an Exchange message. Therefore something else is answering the inbound traffic. Could be a firewall, something like that. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Hi create_share, I agree with Simon. Please try to check the configuration of the firewall and other spam filtering application. Thanks, EvanPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.