Bas S.Th. Verdult wrote:
> Okay, what's your logfile showing (the error response numbers and
> descriptions)?
>
> grep 'NOQUEUE' /var/log/maillog
>
> > maps_rbl_domains = sbl.spamhaus.org, relays.ordb.org, opm.blitzed.org,
> > dun,dnsrbl.net

Hi Bas,

This is the message I receive in maillog:
NOQUEUE: reject: RCPT from unknown[<external_ip_address>]: 554
<ejsanchez@myexternalaccount.com>: Relay access denied;
from=<esanchez@mydomain.com> to=<ejsanchez@myexternalaccount.com>
proto=ESMTP helo=<galahad.local>

thanks in advance for any hint,
regards,
-eduardo s.m.