Hi Scott, Thanks for the clarification about headers. I've had a related question for some time: I don't understand the IP notation in the header in the example below. In the example below the IP is bracketed by parentheses and brackets ([IP]). I'm used to only seeing the IP with brackets not parentheses as well. What does this mean?
The reason I am asking is that one of our clients recently moved to their own in-house Exchange server (formerly hosted on our Imail server). Because they are running on a DSL line they are still using our Imail server as a store and forward to their Exchange. We are trying (in vain) to configure their Exchange server to only accept incoming SMTP connections from Imail. However, this is proving difficult because their firewall is re-writing the received IP to a private IP (as in the example below) the hostname is unchanged, but there's parenthesis around the IP as below. Even if we configure Exchange to only accept SMTP connections from the private IP, the client still gets a lot of unwanted mail that gets sent directly to their firewall IP. I realize that their real problem is their firewall (and routing), but this one small detail in the headers might help clarify things (or not). I hope you are well. Thanks, Daniel. > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:IMail_Forum- > [EMAIL PROTECTED] On Behalf Of R. Scott Perry > Sent: Tuesday, July 20, 2004 5:02 AM > To: [EMAIL PROTECTED] > Subject: Re: [IMail Forum] How to make sense of email header. > > > >I need help to locate a problem my client has. Basically someone sent > her > >an email on Friday afternoon, but she only received it on Saturday > morning. > >She aint happy about it... and requested that I find out the problem and > >explain what happened. Being new to all these internet protocol > thingie... > >I would be glad is you guys can help me out here. > > > >Below is the email header that I have extracted... > > > >Received: from W2KAESB040 ([192.192.100.50]) > > by ntw40mailsvr.jaring.my (InternetNow! MailNow! 3.495); > > Sat, 17 Jul 2004 10:43:08 +0800 > > This is the only Received: header. It is not a header from IMail, so this > isn't your issue. She is not using your IMail server to retrieve this > E-mail. Her mailserver received the E-mail at 10:32AM local time on > Saturday, so she would need to have someone check the logs of her > mailserver to find out what happened. > > >Message-ID: <[EMAIL PROTECTED]> > >From: "sender" <[EMAIL PROTECTED]> > >To: "receiver" <[EMAIL PROTECTED]> > >Date: Fri, 16 Jul 2004 17:12:37 +0800 > > This does show that the E-mail was sent at 17:12PM Friday local time, so > it > did take a long time to be delivered. But her mailserver didn't receive > the E-mail until Saturday morning, suggesting that the mailserver sending > the E-mail had troubles reaching her mailserver. > > >Now .. the sender and receiver are from the same domain... normally this > >should be straightforward and easy ... but i think they use > >some sort of software to handle email forwarding or something ... (this > part > >i really dont understand ... why? wouldnt that be more > >complicated?) > > If they are, either they aren't using your mailserver at all, or their > program isn't RFC compliant, and she needs to realize that by using it, > she > is running her own mailserver, and she has to take control of mail > delivery > issues. > > -Scott > --- > Declude JunkMail: The advanced anti-spam solution for IMail mailservers > since 2000. > Declude Virus: Ultra reliable virus detection and the leader in mailserver > vulnerability detection. > Find out what you've been missing: Ask for a free 30-day evaluation. > > --- > [This E-mail was scanned for viruses by Declude Virus > (http://www.declude.com)] > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
