firedns_resolvemxalist(3)firedns_resolvemxalist(3)NAMEfiredns_resolvemxalist - Resolve a list of MX records of a hostname and
their corresponding A records
SYNOPSIS
#include <firedns.h>
-lfiredns
struct firedns_mxlist *firedns_resolvemxalist(const char * const name)
DESCRIPTIONfiredns_resolvemxalist() attempts to resolve a list of MX records for
the hostname name. If it fails, it treats the host as having a prior‐
ity 0 MX record, and attempts to resolve a list of A and AAAA records
for the hostname. If the MX record lookup succeeds, it looks up the
list of A and AAAA records for each MX record in parallel. It also
checks for RFC-violating CNAMEs for each MX record.
RETURN VALUE
Returns a pointer to an internal static struct firedns_mxlist *. This
structure is the first of a linked list. It contains:
char *name;
char *cname;
struct firedns_ip4list *ip4list;
struct firedns_ip6list *ip6list;
unsigned int protocol; (FIREDNS_MX_SMTP or FIREDNS_MX_QMTP)
unsigned int priority;
struct firedns_mxlist *next;
This function returns NULL on error.
Any result return by this function should be freed with
firedns_free_mxalist(3).
AUTHOR
Ian Gulliver <ian@penguinhosting.net>
SEE ALSOlibfiredns(3)firedns_free_mxalist(3)
2004-02-12 firedns_resolvemxalist(3)
