I got in touch with the ISP and it looks like they their mail servers set up like this: a public smtp server on the outside of the proxy and a private mail server inside the proxy.
The internal mail server was receiving the messages first (and has no corresponding host record in the DNS), then sending the messages to the public mail server to deliver to destination mail server. At this point I'm not certain how the SMTP communication works to complete the HELO process, but tell me if this is the problem. Either their needs to be a host record in the DNS for this internal mail server or do the names of both servers need to be the same? Am I even in the vicinity of the problem? Philip Butler Internal Systems Engineer Region VI ESC phone 936.435.2503 fax 936.295.1447 [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:Declude.JunkMail-owner@;declude.com]On Behalf Of R. Scott Perry Sent: Tuesday, October 22, 2002 10:11 AM To: [EMAIL PROTECTED] Subject: Re: [Declude.JunkMail] Exchange going though ISA Proxy fails HELO test >Any idea why this would happen? Yes, I have a very good idea. It's sending "HELO" or "EHLO" in an SMTP transaction, followed by a made-up host name. The log file or X-RBL-Warning: header should show you the hostname that the ISA Proxy claims to be. Most likely, there is a configuration option in ISA Proxy that lets you choose what the hostname should be. -Scott --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com. --- [This E-mail scanned for viruses by Declude Virus] --- [This E-mail scanned for viruses by Declude Virus] --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.
