[SOLVED] SMTP Server Rejecting Everything

[TrueVector]

Hello, I hope you can help. I needed to allow a remote network to use my SMTP server. (Two different branches using same email server) There are also about 7-8 "field" locations that will need IMAP access (and SMTP) to the mail server. I can get IMAP to connect ok, but when trying to send mail using our SMTP server, i get this message

Your message did not reach some or all of the intended recipients.

  Subject:	Hello
      Sent:	5/27/10 6:10 PM

The following recipient(s) cannot be reached:

      'client@client.com' on 5/27/10 6:10 PM
            554 5.7.1 <client@client.com>: Relay access denied

      'client@client.com' on 5/27/10 6:10 PM
            554 5.7.1 <client@client.com>: Relay access denied

I have read this guide: ZimbraMtaMyNetworks - Zimbra :: Wiki

The branch where the server is has a network of 192.168.0.0/24 and the other branch has a network of 192.168.1.0/24. The remote locations I will have no control over.

I really do not understand what to do and what is going wrong. I added the networks like the guide said to do, but I always get that Relay access is denied error


I would so greatly appreciate anyone's help and thank you

[phoenix]

You really don't want to add any remote IP to your MyNetwork setting, if any of those locations are compromised then you will act as an open relay - not a good idea.

You should get your remote users to use Port 587 (the Submission port) to send mail, using that port will also require Authentication - do not allow users to relay through your server with any authentication. If the remote location is another mail server then the same rule applies, get them to send through Port 587 with Authentication.

[TrueVector]

Thank you so much. I removed the remote network and they use port 587 (My real problem is that I had it in my mind that it was port 465 and that did not work)

Thanks again for your response and helpful guidance

[phoenix]

Originally Posted by TrueVector

Thank you so much.

Glad you've fixed it.

Originally Posted by TrueVector

I removed the remote network and they use port 587 (My real problem is that I had it in my mind that it was port 465 and that did not work)

That was the port that was commonly used for Submission but the RFC was never ratified, port 587 was adopted as the official Submission port (I think is was fairly recent) and was also incorporated into the Zimbra configuration with Authentication required.