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#!/usr/bin/perl #checks for valid email address #usage validemail <file containing email addresses> use warnings; use strict; use Mail::CheckUser; use Parallel::ForkManager; use Fcntl qw/:flock :seek/; use FileHandle; my $pm=new Parallel::ForkManager(20); my $addrfile = $ARGV[0] || die "Usage validemail <file containing email addresses> Will return two files: goodmails.csv and badmails.csv. If these files exits already they will be deleted."; my ($is_valid, $host, $x, @mx, $add, @adds); #custom words that make emails invalid to you my @custom = qw/ postmaster webmaster /; my $regex = join "|", @custom; $regex = qr/$regex/; open (EMAILS, "$addrfile"); #remove troublesome windows /r characters #and leading whitespace while (<EMAILS>){ $_ =~ s/\015//; $_ =~ s/^\s*//; chomp $_; push @adds, $_; } close (EMAILS); #warning, I will delete existing files open (BADADDR, ">badmails.csv") || die; open (GOODADDR, ">goodmails.csv") || die; #to prevent strange writing problems #when running threads we must set the #write buffers see #to prevent strange writing problems #when running threads we must set the #write buffers see # autoflush BADADDR 1; autoflush GOODADDR 1; #remove custom regexes $x = 0; while ($x <= $#adds){ if ($adds[$x] =~ m/$regex/){ splice @adds, $x, 1; }else{ $x++; } } #when using Mail::UserCheck set #these variables #timeout on DNS and SMTP network checks $Mail::CheckUser::Timeout = 10; foreach $add (@adds){ $pm->start and next; if (Mail::CheckUser::check_email($add)){ writeaddr(*GOODADDR, $add); #address is good $pm->finish; }else{ writeaddr(*BADADDR, $add); #address is bad $pm->finish; } } $pm->wait_all_children; close (BADADDR); close (GOODADDR); sub writeaddr{ my $FH = $_[0]; my $address = $_[1]; flock $FH, LOCK_EX or die "Flock failed: $!\n"; seek $FH, 0, 2 or die "Seek failed: $!\n"; print $FH "$address\n"; flock $FH, LOCK_UN or die "unFlock failed: $!\n"; }

In reply to Valid Email Filter by neilwatson

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