use strict;
use warnings;
mailog = "/var/log/mail.log";

open (MAIL, "+<$mailog") or die $!;
foreach (<MAIL>) {
     chomp; 
     my $datestr =~ (/^.{15}/);
     my $mailmsg =~ (/^.?connect\sto.*|to=.*|host.*$/);
     print $datestr,"\n",$mailmsg;
}
close (MAIL);

The output of this code is below and I DO NOT want, can skip the output
such as
Mar 21 18:58:08
Mar 21 18:58:08
Mar 21 18:58:08

I only want ouput IF the date is followed by to=|connect\sto.*|host.*

__OUTPUT__
to=<colossus1821@juno.com>, relay=mx.dca.untd.com[64.136.44.37]:25,
delay=177323, delays=177322/0.02/1.8/0, dsn=4.0.0, status=deferred (host
mx.dca.untd.com[64.136.44.37] refused to talk to me: 550 Access
denied...0b30748490a5c4c48900e4e9912059c0e18d1d24dd45d1896d5150b1f17551f975b124c9b1b12499b11974d1d44099f4d135f440c46d305d...)
Mar 21 18:58:08
Mar 21 18:58:08
Mar 21 18:58:08
to=<scottw@webav.com>, relay=none, delay=187566,
delays=187536/0.05/30/0, dsn=4.4.1, status=deferred (connect to
webav.com[74.117.116.83]:25: Operation timed out)
Mar 21 18:58:08
to=<stevew@webav.com>, relay=none, delay=187566,
delays=187535/0.02/30/0, dsn=4.4.1, status=deferred (connect to
webav.com[74.117.116.83]:25: Operation timed out)
Mar 21 18:58:08
Mar 21 18:58:08
to=<ssams@phoenixformations.com>, relay=none, delay=187576,
delays=187546/0.02/30/0, dsn=4.4.1, status=deferred (connect to
mail.phoenixformations.com[69.61.147.50]:25: Operation timed out)