1dns_mx(3)                  Library Functions Manual                  dns_mx(3)
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NAME

6       dns_mx - look up Mail eXchanger
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SYNTAX

9       #include <dns.h>
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11       int dns_mx(stralloc* out,stralloc* fqdn);
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DESCRIPTION

14       dns_mx looks up MX records for the fully-qualified domain name in fqdn.
15       It puts the MX records into out and returns 0. Each MX record is a two-
16       byte  MX  distance (big endian) followed by a \0-terminated dot-encoded
17       domain name. If the domain does not exist in DNS, or has no MX records,
18       out will be empty.
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20       If  dns_mx  has  trouble  with the DNS lookup or runs out of memory, it
21       returns -1, setting errno appropriately. It may or may not change out.
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SEE ALSO

24       dns_mx_packet(3), dns_ip4(3), dns_ip6(3)
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28                                                                     dns_mx(3)
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