> Am 28.11.2014 um 20:26 schrieb Wietse Venema <wie...@porcupine.org>: > > Christen R??ner: >> I look for: >> >> Table: >> Lhs Rhs >> mx.some.mta smtp:[mx.whatever.tld]:1234 > > I have implemented smtp_dns_reply_filter (currently, testing), which > matches a resource record against a (regular expression) pattern. > > At the moment supports IGNORE, but it would not be difficult to > implement a REPLACE action. The content of the resource record have > been "valid-hostname" sanity checked, so there is little danger of > malicious substitutions. > > Thus, Postfix could do > > foo.example.com. 12345 IN MX 10 bar.example.com. > REPLACE foo.example.com. 12345 IN MX 10 baz.example.net. > > Similar operations for A/AAAA records,with some limitations (can > change the last two fields only, not the fields that are determined > by the query itself). > > Would that solve the problem?
How could a different port be specified? If I do understand your example, this only replaces the host, but gives no choice to specify a port Christian > > Wietse
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