I may have missed part of this thread, but have you tried telnet-ing from the actual IMS server to the domain in question on port 25 (using his mail IP and domain name)? With that you could see if anything weird is sent back from his side and then also, if the test fails, the other admin could immediately check his log files to see what his system did not like about the session. Again, I'm sorry if I'm repeating stuff that has already been mentioned here.
Rich Warren wrote: > Thank you for the thoughts, but no luck yet. See below. > -----Original Message----- > From: BSarton <[EMAIL PROTECTED]> > To: [email protected] <[email protected]> > Date: Friday, December 05, 2003 6:47 AM > Subject: Re: Unusal DNS Resolution ? Issue > > >Did you try to nslookup domain2.com throught all their names servers (the ns > >list in their whois) ? > >+ through the 2 name servers in your networks configuration ? > > Yes. In all cases, domain2.com responds with the IP of their www > server. > mail.domain2.com responds with the IP of their mail server > The actual MX record points to their mail firewall server. > > >Has domain2.com ever be a local domain for your own server, in the past ? > > No. And they are not listed in the antirelay file as a local domain. > I would hate > to have to do that. > > >Did you try to send an email to [EMAIL PROTECTED] ? ( assuming > >mail.domain2.com is their MX) > > Yes. I have tried [EMAIL PROTECTED], [EMAIL PROTECTED] (this is > the one listed in MX), [EMAIL PROTECTED], [EMAIL PROTECTED] None > of these work. They all just get stuck and wait their 54 tries and then come > back and say > "cannot resolve". If I send mail to a domain that does not have a DNS entry, > it also > comes back "cannot resolve", but it does so Immediately! It does not wait > the 54 tries. > Also, he has a personal mail server on this domain, [EMAIL PROTECTED] When I > send mail to that one, it works immediately! > This would seem to say that IMS is not doing something that his > e-mail > firewall wants, but I do not know what that is, and he does not know what > that is either. > The problem is that other mail servers can get through with no problem. > > >Benoit > > > > > > > >----- Original Message ----- > >From: "Rich Warren" <[EMAIL PROTECTED]> > >To: <[email protected]> > >Sent: Thursday, December 04, 2003 5:12 AM > >Subject: Unusal DNS Resolution ? Issue > > > > > >| Hello, > >| I am working with an administrator from another domain to find why our > >domain > >| (hocking.net) cannot send e-mail his (domain2.com). Messages sent from > >our domain are > >| returned with the message "Cannot resolve domain2.com" Yet: > >| ==> nslookup shows a valid entry for their mail exchanger pointing to > >their mail > >| firewall > >| ==> mail.domain2.com and smtp.domain2.com point to their mail server > >| ==> Using basic mail commands from a telnet session initiated from a > >router on our > >| network to their mail firewall, successfully sends a message to their > >domain. Here is the > >| router session: > >| mail from: [EMAIL PROTECTED] > >| 250 Ok > >| rcpt 2 > >| 501 Syntax: RCPT TO: <address> > >| rcpt to: [EMAIL PROTECTED] > >| 250 Ok > >| data > >| 354 End data with <CR><LF>.<CR><LF> > >| subject: test > >| Test > >| . > >| 250 Ok: queued as 1B765D003790 > >| Also, we can receive from his domain just fine. > >| He does have a front end mail receiver of some sort that is > >| Does anyone have any idea why IMS will not send mail to > >domain2 or where we > >| can start to look? > >| Thanks. > >| Rich > >| [EMAIL PROTECTED] > >| > >| > >| This is the discussion list for the IMS Free email server software. > >| To unsubscribe send mailto:[EMAIL PROTECTED] > >| > >| Delivered by Rockliffe MailSite > >| http://www.rockliffe.com/mailsite > >| Rock Solid Software (tm) > >| > > > >This is the discussion list for the IMS Free email server software. > > To unsubscribe send mailto:[EMAIL PROTECTED] > > > > Delivered by Rockliffe MailSite > > http://www.rockliffe.com/mailsite > > Rock Solid Software (tm) > > > > This is the discussion list for the IMS Free email server software. > To unsubscribe send mailto:[EMAIL PROTECTED] > > Delivered by Rockliffe MailSite > http://www.rockliffe.com/mailsite > Rock Solid Software (tm) This is the discussion list for the IMS Free email server software. To unsubscribe send mailto:[EMAIL PROTECTED] Delivered by Rockliffe MailSite http://www.rockliffe.com/mailsite Rock Solid Software (tm)
