Hi, >I agree with the statement about setting up your DNS to deal with this, but >I have never found a good DNS book.
Virtually any O'Reilly book is good if not great. Search their site for DNS, and you will find at least 4 good books on DNS, DNS and BIND, DNS on Windows, TCP/IP networking, etc. etc. The "DNS" and "DNS and BIND" are good enough to be considered must-haves by most TCP/IP network administrators. Highly recommended. 'Course, there is also the good "book" called the Internet with tons of information on DNS. Eric >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 ________________________________________________________________________ TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] with unsubscribe witango-talk in the message body
