Re: DNS based virtual domains?
On Thu June 18 2009 06:12:19 Halassy Zoltán wrote: Just curious, is there a way to maintain the virtual_mailbox_domains from DNS database (secure, using DNSSEC to a given set of servers, using nonrecursing requests, and accepting only authoritative answers)? So when a mail comes, it would try to look up an MX record to that domain, and if one of the MX records is the local server, it would forward it automatically. It sounds reasonable to me if the lookup is secured somehow, but no, there is no dns: map type implemented in Postfix (yet). See http://www.postfix.org/DATABASE_README.html for map types overview. -- Offlist mail to this address is discarded unless /dev/rob0 or not-spam is in Subject: header
Re: DNS based virtual domains?
On Monday 22 June 2009 at 20:16 (CET), /dev/rob0 wrote: On Thu June 18 2009 06:12:19 Halassy Zoltán wrote: Just curious, is there a way to maintain the virtual_mailbox_domains from DNS database (secure, using DNSSEC to a given set of servers, using nonrecursing requests, and accepting only authoritative answers)? So when a mail comes, it would try to look up an MX record to that domain, and if one of the MX records is the local server, it would forward it automatically. It sounds reasonable to me if the lookup is secured somehow, but no, there is no dns: map type implemented in Postfix (yet). See http://www.postfix.org/DATABASE_README.html for map types overview. Though, using a custom TCP-based table, one could implement such a feature rather easily I'd say. -- Regards, Ruben Laban Systems and Network Administrator ISM eCompany
Re: DNS based virtual domains?
Halassy Zolt??n: Just curious, is there a way to maintain the virtual_mailbox_domains from DNS database (secure, using DNSSEC to a given set of servers, using nonrecursing requests, and accepting only authoritative answers)? So when a mail comes, it would try to look up an MX record to that domain, and if one of the MX records is the local server, it would forward it automatically. Just like SQL and LDAP, the query interface could look like: postmap -q example.com dns:/file/name Where /file/name contains all the information that is needed to make the query. If we take this route it should be usable for more than just virtual_mailbox_domains. Wietse
