Norbert Schmidt via Postfix-users: > Hello, > > as many people we do have problems delivering mail through the Microsoft > MX'es which are used by a lot of company domains. All these domains use MX > records with *.protection.outlook.com or *.prod.outlook.com. > > I am looking for a way to send mail to domains that have such a mx record > through a different transport (for instance through the mailjet service) but > send all other mail the "normal" way. > > As I do not know in advance that a domain is using a M$-MX host, I cannot > put all these domains into the transport table by hand. > > I tried to use a regular expression "/^.*\s+prod\.outlook\.com\.$/" in a > file and then let smtp_generic_maps use it with "smtp_generic_maps = > pcre:/etc/postfix/outlook_mx_patterns" > > My plan was to us it as a filter in transport. > > The problem is, smtp_generic_maps does not accept reglar expressions.
Of course it does support regexp: and pcre: tables, but you need to replace a destination MX or A recored, not the recipient address. This could be a use case for https://www.postfix.org/postconf.5.html#smtp_dns_reply_filter but that feature currently has no REPLACE operation. Another option would be to use the DNS resolver (Bind, unbound, etc) support to manipulate zone lookups. Wietse _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
