Quoting Menekhem M. Zviman:
> host gateway-r.comcast.net [204.127.198.26]: 550-69.250.247.7 blocked by
> ldap:ou=rblmx,dc=comcast,dc=net
> 550 Comcast.net subscribers are not permitted to directly connect to
> this mail server.
Looks like the same as T-Online is doing: The MXs are not reachable from
"inside". Possible solutions:
- use comcast's smarthost (smtp.comcast.net?) for outgoing mail. The
easiest and probably best way, as your IP (69.250.247.7) is blocke by
many mailservers.
- use comcast's smarthost only for comcast domains. Easy if the list is
constant (manualroute, domains, route_data), a little tricky if not
(condition with MX lookup). You could also forge the addresses of the
MXs to the smarthost's, but that's kludgy.
