Michael Jakscht wrote:
>
> Hi,
>
> I configured my exim 3.36 server to use the following dnsbl's:
>
> rbl_domains = relays.ordb.org/reject : \
> or.orbl.org/reject : \
> sbl.spamhaus.org/reject : \
> opm.blitzed.org/reject
>
> When I start a smtp session exim first checks these DNSBLs. ??
> Is this in fact so?
Yes, the RBL-checking is done when the host connects.
> I think it could happen this way because of the long delay
> till exim responses with the proposal and start of the smtp-session.
> My question is how long can this delay be till the connection is lost?
> In special I think of the possibility that other MXs are trying to connect
> to our MX and get a timeout because of the DNSBLs checks...
> The server I'm talking about is reachable at mail.vit.de (MX=10).
If you need more control, with exim4 and ACLs you have much more
flexibility, when the checking will be done.
ciao
