Adding new domain to MS

[Ken Anderson]

# sendmail access map
# accept mail for real users
TO:realuser1 at domain.com    RELAY
TO:realuser2 at domain.com    RELAY
# Default entry to reject
TO:domain.com  ERROR:5.1.1:550 User unknown

This will allow incoming sendmail process to reject the recipient with
'unknown user' instead of accepting all mail and passing it to MailScanner.

Ken
Pacific.Net


MW Mike Weiner (5028) wrote:

> -----Original Message-----
> From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On Behalf
> Of Ken Anderson
> Sent: Saturday, March 20, 2004 12:53 PM
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: Re: Adding new domain to MS
>
> You can use the sendmail access map to reject all but the users that are
> real on ag.com. You'll have to push a list of users out of your exchange box
> to the MailScanner box, but it could be worth the effort if you get
> dictionary attacks against the domain. This will save the exchange box
> having to bounce them all.
>
> Well I have that user list and am using it for
> ham.delivery.rules/spam.delivery.rules/hispam.delivery.rules already, but I
> am curious rather than the normal:
>
> Domain.com                      RELAY
>
> Format in the /etc/mail/access map, what would the syntax look like for our
> victim user pcamino at ag.com ??
>
> Thanks
> Michael
>
>