nanog mailing list archives
mail does bounce (was: Customers down?)
From: woods () most weird com (Greg A. Woods)
Date: Sat, 1 Jan 2000 11:40:51 -0500 (EST)
[ On Saturday, January 1, 2000 at 15:37:34 (+0100), Mikael Abrahamsson wrote: ]
Subject: Re: Customers down? What programs are that? I was under the illusion that everybody mimicked sendmails behaviour in that if you cannot get an authoritative answer, queue it whatever everything else (basically).
I know for certain that Postfix and Smail will immediately bounce a message when the domain is authoritatively non-existant. I'd be very surprised and dismayed if sendmail and all other true SMTP mailers did not do exactly the same thing. If you're lucky/smart enough you can make your main e-mail domain be the same domain name as one of your registered nameservers and then at least RFC-974 will have mailers queue outgoing mail to your domain, but that's about the only way to prevent your mail from bouncing if all of your authoritative nameservers disappear long enough from the net. This kind of trick limits you in other ways though so it won't be ideal for everyone, and of course if you have more "main" e-mail domains than registered nameservers (of your own) then you'll be hosed anyway. -- Greg A. Woods +1 416 218-0098 VE3TCP <gwoods () acm org> <robohack!woods> Planix, Inc. <woods () planix com>; Secrets of the Weird <woods () weird com>
Current thread:
- Re: Customers down? jlewis (Dec 31)
- <Possible follow-ups>
- Re: Customers down? Joe Shaw (Dec 31)
- Re: Customers down? Sean Donelan (Jan 01)
- Re: Customers down? Mikael Abrahamsson (Jan 01)
- mail does bounce (was: Customers down?) Greg A. Woods (Jan 01)
- Re: mail does bounce (was: Customers down?) Steve Sobol (Jan 01)
- Re: mail does bounce (was: Customers down?) sthaug (Jan 01)
- RE: mail does bounce (was: Customers down?) Roeland M.J. Meyer (Jan 01)
- Re: mail does bounce (was: Customers down?) Steven J. Sobol (Jan 01)
- Re: mail does bounce (was: Customers down?) Greg A. Woods (Jan 02)
- Re: Customers down? Mikael Abrahamsson (Jan 01)
- Re: mail does bounce (was: Customers down?) Christian Kuhtz (Jan 01)