ISP List wrote:
> So, what I would like exim to do is to be able to do a LDAP or SQL lookup
> during the SMTP negotiation phase (following the RCPT TO) to determine if
> the recipient address is valid or not. Based on my research, using exim
> 4.x's ACL facility seems to be the best approach, but I'm a little unclear
> on the proper syntax as the manual does not give any examples when using
> LDAP or SQL. Should I be using the "recipients = <address list>"
> condition, or make up a custom "condition = " of my own?
>
> Any pointers would be much appreciated.
deny message = Our domain, but user unknown
domains = +localdomains
!recipients = mysql;select 1 from users where \
email='$local_part@$domain'
This should work when you place it in a strategic good way in your
rcpt-acl (before any RBL-checks, etc.)
Nico
