check-mail-addr.pl: rewrite using IO::Socket::INET

Signed-off-by: Florian Pritz <bluewind@xssn.at>

1 files changed, 40 insertions, 7 deletions

diff --git a/check-mail-addr.pl b/check-mail-addr.pl
index f50ed3c..29f23c2 100755
--- a/check-mail-addr.pl
+++ b/check-mail-addr.pl
@@ -1,17 +1,50 @@
 #!/usr/bin/perl
 use warnings;
 use strict;
-use Mail::CheckUser qw(check_email last_check);
+use IO::Socket::INET;
 use File::Basename;
+use Net::Domain qw(hostfqdn hostdomain);
+use Net::DNS;
+use Data::Dumper;
 
 if(@ARGV != 1) {
   print "usage: ", basename($0), " <emailaddress>\n";
-  exit 2;
+  exit;
 }
 
-if(check_email($ARGV[0])) {
-  exit 0;
-} else {
-  print last_check()->{reason}, "\n";
-  exit 1;
+autoflush STDOUT 1;
+
+sub post {
+  my $socket = shift;
+  my $command = shift;
+  my $ret;
+
+  print " >> $command";
+  print $socket $command;
+  while ($ret = $socket->getline) {
+    print "<<  ".$ret;
+    $ret =~ /[0-9]([- ]).*/;
+    last if ($1 eq " ");
+  }
+
 }
+
+my $email = $ARGV[0];
+$email =~ m/.*@(.*)/;
+my $domain = $1;
+
+print "Getting MX for $domain\n";
+my @mx = mx($domain);
+
+print "Connecting to ".$mx[0]->exchange."\n";
+my $socket = IO::Socket::INET->new(
+  PeerAddr => $mx[0]->exchange,
+  PeerPort => 25,
+  Proto => "tcp") || die "Error: couldn't create socket.";
+
+print "<<  ".$socket->getline;
+post $socket,"EHLO ".hostfqdn()."\n";
+post $socket, "MAIL FROM:<>\n";
+post $socket, "RCPT TO:<$email>\n";
+post $socket, "QUIT\n";
+