Zone apex
Start of authority
Email
Serial
2026030401
Refresh
1d
Retry
5m
Expire
7d
Negative cache TTL
5m
Question and response
Question
dig spf.z168.zixworks.com. SOA
Answer
The response has no answer records.
Authority
zixworks.com. 300 SOA ns.zixcorp.com. noc.zixcorp.com. 2026030401 86400 300 604800 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0