exchange in Net::DNS


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exchange in Net::DNS

by vit (Friar)

on Oct 10, 2011 at 14:23 UTC ( [id://930647]=perlquestion: print w/replies, xml )

Need Help??

vit has asked for the wisdom of the Perl Monks concerning the following question:

Dear Monks,
What is the meaning of exchange key in this module? For example in this code

use strict;
use Data::Dumper;
#########################################
die "INPUT: domain:\n" if (@ARGV != 1);
my $domain = $ARGV[0];
#########################################
# Use your own resolver object.
use Net::DNS;
my $res = Net::DNS::Resolver->new;
my  @mx = mx($res, $domain);
print Dumper (@mx);
[download]

for domain yahoo.com I am getting 3 records:

'exchange' => 'mta7.am0.yahoodns.net'
'exchange' => 'mta5.am0.yahoodns.net'
'exchange' => 'mta6.am0.yahoodns.net'
[download]

this is related to my question in http://www.perlmonks.org/?node_id=929571

Comment on exchange in Net::DNS Select or Download Code

Replies are listed 'Best First'.
Re: exchange in Net::DNS by Anonymous Monk on Oct 10, 2011 at 14:35 UTC
I imagine it is the same or similar meaning as described in the related RFC	[reply]
Re^2: exchange in Net::DNS by vit (Friar) on Oct 10, 2011 at 14:57 UTC
Sorry, I do not see any relation	[reply]
Re^3: exchange in Net::DNS by Anonymous Monk on Oct 10, 2011 at 15:09 UTC
Then you're not looking real hard See also Determine if domain is actually used for email, where monks even LINK to the related RFCs	[reply]

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