dns_mx man page on Alpinelinux

dns_mx man page on Alpinelinux

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dns_mx(3)							     dns_mx(3)

NAME
       dns_mx - look up Mail eXchanger

SYNTAX
       #include <dns.h>

       int dns_mx(stralloc* out,stralloc* fqdn);

DESCRIPTION
       dns_mx looks up MX records for the fully-qualified domain name in fqdn.
       It puts the MX records into out and returns 0. Each MX record is a two-
       byte  MX	 distance (big endian) followed by a \0-terminated dot-encoded
       domain name. If the domain does not exist in DNS, or has no MX records,
       out will be empty.

       If  dns_mx  has	trouble	 with the DNS lookup or runs out of memory, it
       returns -1, setting errno appropriately. It may or may not change out.

SEE ALSO
       dns_mx_packet(3), dns_ip4(3), dns_ip6(3)

								     dns_mx(3)

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