I made two successive mistakes while updating zone records. Once I forgot to increment the serial number, then next time I did put a digit more ie 20170210111 instead of 2017021011, and each time I reloaded config : rndc reload
.
When I realised it, I switched back serial to a 10 digits number, so my zone file SOA serial is now 2017021012.
I get this now :
# host -C domain.tld
Nameserver X.X.X.X:
domain.tld has SOA record X.X.X.X.ovh.net. postmaster.domain.tld. 2017021010 28800 7200 1209600 3600
Nameserver Y.Y.Y.Y:
domain.tld has SOA record X.X.X.X.ovh.net. postmaster.domain.tld. 2017021003 28800 7200 1209600 86400
Where X.X.X.X is my primary DNS server IP and Y.Y.Y.Y secondary one.
I'm not really used to DNS configuration, and I really don't know how to resynchronize serials and permit propagation. I read already a lot of posts, I'm afraid I still don't know if I should give zone record a greater number, what happened when I reloaded with 13 digits...?