I agree with the statement about setting up your DNS to deal with this, but I have never found a good DNS book.
My domain is eapintl.com. I have 2 A records for MAIL.EAPINTL.COM each with a different IP address. If you ping mail.eapintl.com, you will get on address one time and the other one the next time. I am assuming that Tango is using the A record and not the MX record. I also have multiple MX records. Since your system is large enough to have multiple mail servers, your DNS probably already has all of the records you need in it. Change the tango server to use the domain name instead of the IP address for the mail server. Make sure your web server is configured to use the correct dns server to get the name resolved. I have a really nice tool for testing & debugging DNS servers called DNScape www.inettools.com. I don't remember if it was free or cost $39. It takes all of the guesswork out of what DNS records get returned and is worth it's weight in gold. Troy ===== Original Message from [EMAIL PROTECTED] at 5/23/02 8:17 am >Hi, > >>I thought about that, but the problem is unintentional outages. > >Outages, intentional or not, is the reason that you can set up your DNS for >multiple redundant mail servers. The corollary is that by properly setting >up your DNS for multiple redundant mail servers, you (and every other >developer in the world) don't have to waste their time creating code to >handle an unavailable server. > >I recommend that you or your support team read any good book on DNS. > >Eric > > > >>The systems >>people take care that the SMTP is always live, except for those random >>problems that seem to creep up from time to time. The only thing I can >>think of then is to run local SMTP servers on each of my Tango servers. >>That way they can hold the mail until it can either deliver it to out >>primary SMTP server or out to the internet. >> >>Larry Gutman >> >>-----Original Message----- >>From: Jon Grieve [mailto:[EMAIL PROTECTED]] >>Sent: Thursday, May 23, 2002 8:23 AM >>To: Multiple recipients of list witango-talk >>Subject: RE: Witango-Talk: Multiple SMTP server >> >> >> >>Ah... that I don't think you can do. >> >>When you say redundant, do you mean to handle When Mail Servers Die >>(starring Sheriff John Brunell ;), or rather that you want to be able to >>knowingly turn them on and off without having to reconfigure Witango? >> >>What I'm getting at is, you could mangle DNS so that Witango always finds a >>server because you know to change DNS to 'avoid' the server you're just >>about to unplug... >> >>Jon >> >> >> >> >>-----Original Message----- >>From: Gutman, Larry [mailto:[EMAIL PROTECTED]] >>Sent: 23 May 2002 2:11 >>To: Multiple recipients of list witango-talk >>Subject: RE: Witango-Talk: Multiple SMTP server >> >> >>Yes. I want it to be redundant. >> >>-----Original Message----- >>From: Jon Grieve [mailto:[EMAIL PROTECTED]] >>Sent: Thursday, May 23, 2002 8:04 AM >>To: Multiple recipients of list witango-talk >>Subject: RE: Witango-Talk: Multiple SMTP server >> >> >>Larry, >> >>It appears (I haven't tried to do this) that you can specify a different >>mail server on at least a Witango Application basis. I suspect you can >>probably do this on a per-Domain basis too -- probably by manually adding >>domains to "domains.ini". >> >>Is that what you mean, or more of a safety net (i.e. try Server A, then B if >>A is not available, etc.)? >> >>Jon >> >> >> >> >>-----Original Message----- >>From: Gutman, Larry [mailto:[EMAIL PROTECTED]] >>Sent: 23 May 2002 1:52 >>To: Multiple recipients of list witango-talk >>Subject: Witango-Talk: Multiple SMTP server >> >> >>Can I have more the one SMTP server defined in my tango configurations? If >>so what is the format. >> >>Thanks >> >>Larry Gutman >>________________________________________________________________________ >>TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] >> with unsubscribe witango-talk in the message body >>________________________________________________________________________ >>TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] >> with unsubscribe witango-talk in the message body >>________________________________________________________________________ >>TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] >> with unsubscribe witango-talk in the message body >>________________________________________________________________________ >>TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] >> with unsubscribe witango-talk in the message body > > >________________________________________________________________________ >TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] > with unsubscribe witango-talk in the message body ________________________________________________________________________ TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] with unsubscribe witango-talk in the message body
