On 17/05/17 16:02, Brian Candler wrote: > I found the options "mx_fail_domains" and "srv_fail_domains" which treat > failed SRV and MX record lookups as if they didn't exist.
http://exim.org/exim-html-current/doc/html/spec_html/ch-the_dnslookup_router.html#SECTprowitdnsloo "when a DNS lookup in a dnslookup router results in a DNS failure ... in the case of an MX lookup ... matches mx_domains, in which case routing fails". ... if that does what I think, your primay dnslookup router will decline, and your 4g-specific dnslookup router can have a go. -- Cheers, Jeremy -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
