We just had a problem where a BIND9 running on our postfix MX 451-rejected-as-unknown-domain all msgs from @sender.domain for 9 days.
"rndc flush" allowed the domain to be resolved immediately and its messages accepted. When the BIND reports "server fail", rather than a negative answer with neg-TTL, how long is SRV FAIL cached in BIND9? RFC2308 says "no longer than 5 minutes". We do not know whether unknown domain's NS was really SRV FAIL for 9 days. Len _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users