Author: Kjetil Torgrim Homme Date: To: Tiago Botechia Silveira CC: exim-users Subject: Re: [exim] Smtp_defer DNS or SPF issues?
On Tue, 2006-08-15 at 05:21 -0300, Tiago Botechia Silveira wrote: > 1- DNS: I found out that the DNS does not indicate any MX entries for these
> IP´s, just the regular one. Well, unfortunately, I do not manage the DNS server
> over here, and the guy who manages the network department (150.162.55.xxx) is a
> hard minded fellow, who likes to concentrate the power and the few knowledge he
> has for himself, which means that it’ll be impossible to change it.
there is no requirement for an outbound mail server to also handle
inbound, so you don't need an MX record to be allowed to send mail.
> 2- SPF complying: I was reading that some mx servers simply don’t accept
> e-mails coming from non-spf complaints servers. And as far as I know, I would
> have to perform a change on the DNS entries for the IP´s (again, impossible)
such servers will not be getting much mail. I doubt more than 10% of
mail domains publish SPF.
> These are some examples of the error logs, when sending messages:
> …. R=dnslookup T=remote_smtp defer (110): Connection timed out
sounds like your resolver isn't working, check /etc/resolv.conf.
