RDNS

[Stephen Swaney]

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Rose, Bobby
> Sent: Monday, January 23, 2006 6:24 PM
> To: MailScanner discussion
> Cc: mailscanner-announce at lists.mailscanner.info
> Subject: RE: RDNS
> 
> I thought that it was a default action in sendmail to not accept from
> unresolvable hosts and in setting
> FEATURE(`accept_unresolvable_domains')dnl you are actually disabling so
> that it does accept from unresolvable hosts.
> 

Nope :(

Steve

Stephen Swaney
Fort Systems Ltd.
stephen.swaney at fsl.com
www.fsl.com

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Matt
> Kettler
> Sent: Monday, January 23, 2006 5:42 PM
> To: MailScanner discussion
> Cc: mailscanner-announce at lists.mailscanner.info
> Subject: Re: RDNS
> 
> Darryl DeLao wrote:
> > Is there a way to turn on RDNS in Mailscanner, or is this done in
> > Sendmail?  If so, how is it done?  Basically, if an email comes in and
> 
> > the originating domain can not be resolved, I do not want to accept
> > the email in the system.
> 
> Well, MailScanner can't ever prevent any email from being accepted.
> MailScanner acts on the queue files, so by the time MS sees it, it's
> long since been accepted.
> 
> 
> However, the feature you want is a standard sendmail feature. Look up
> the "accept_unresolvable_domains" feature, and disable it.
> 
> If you're using m4 to build your sendmail.cf (highly recommended unless
> you're a sendmail master)
> 
> edit /etc/mail/sendmail.mc
> 
> add a "dnl" to the start of the feature line, line this:
> 
> dnl FEATURE(`accept_unresolvable_domains')dnl
> 
> rebuild your sendmail.cf by running make in the /etc/mail directory
> 
> restart your MailScanner service to restart the sendmail's.
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