Re: [9fans] $smtp dns failure

[erik quanstrom <quanstro@coraid.com>]

there is an interesting case  with mxlookup1() in mxdial.c.
if a dns /failure/ is reported for the mx lookup, then mxdial doesn't
try a/cname records.  i've had trouble in the past with mx failures when the
a record looks up just fine.  i'm not sure if the standard says one must quit
on dns failure.

- erik

On Tue Jan 16 13:25:49 EST 2007, steve@quintile.net wrote:
> > exec /bin/upas/smtp -d -h crn.mteege.de 'net!$smtp' mtg mteege@gmail.com
> > expanding /net!$smtp
> > sending /net/dns '192.168.0.22 mx'
> > dns: dns: dns failure
>
> > There is no mx record for 192.168.0.22. If I use 'mteege.de', which
> > has a mx record (192.168.0.22), sending mail works.
>
> Strange, where does it get this IP address from?
> do you have smtp=192.168.0.22 in /lib/ndb/local?
>
> The smtp= should point to a FQDN rather than an IP address
> to allow upas/smtp to look up the MX and then A RRs.
>
> I get this:
>
> 	exec /bin/upas/smtp -d -g 'net!$smtp' -h quintile.net 'net!$smtp' steve steve.simon@mywork.com
> 	expanding /net!$smtp
> 	sending /net/dns 'smtp.myisp.com mx'
> 	dns: dns: resource does not exist
> 	mxdial trying /net/net!smtp.myisp.com!smtp
> 	220 ESMTP server ready
>
> -Steve