Name
dns_cache stats, dns_cache refcnts, dns_cache submit, dns_cache lookup — manage Momentum's DNS cache
Synopsis
dns_cache lookup { record } { type }
dns_cache refcnts
dns_cache stats
dns_cache submit { record } { type }
Description
The following commands help you to collect information on Momentum's dns cache.
dns_cache stats shows summary statistics about the MTA's dns cache.
dns_cache refcnts shows the count of references of each entry in the MTA's dns cache. A cache entry can only be purged when its reference count becomes zero.
dns_cache submit record type submits a dns query, whose result will be stored in cache if not already.
dns_cache lookup record type looks up a dns query in the cache.
record type can be A, MX, PTR, X, X_AAAA, TXT, AAAA, or CNAME.
10:47:35 /tmp/2025> dns_cache lookup mail.yahoo.com A Cached result not found, try a submit. 16:59:26 ecelerity(/tmp/2025)> dns_cache submit mail.yahoo.com A Submitted 16:59:32 ecelerity(/tmp/2025)> dns_cache lookup mail.yahoo.com A ;; QUESTION SECTION: ;mail.yahoo.com IN A ;; ANSWER SECTION: mail.yahoo.com 299 IN A 209.73.177.115 16:59:33 ecelerity(/tmp/2025)> dns_cache stats DNS Queries: TXT: 1 PTR: 1 MX: 1 A: 2 arpa IPv4: 0 arpa IPv6: 0 DNS responses: Total: 5 Bad: 0 DNS cache: Lookups: 14 Hit Rate: 35.7143% 16:59:41 ecelerity(/tmp/2025)> dns_cache refcnts [ 3] mail.omniti.com [213s] (null) [ 3] mail.yahoo.com [282s] (null) [ 3] mail.yahoo.com [248s] (null) [ 3] mail.yahoo.com [272s] (null)
Note
These console commands manipulate the DNS cache . The dig, refresh domain and domain commands manipulate the route cache .