diff --git a/lib/Qpsmtpd/SMTP.pm b/lib/Qpsmtpd/SMTP.pm
index 0ebc4de..c420215 100644
--- a/lib/Qpsmtpd/SMTP.pm
+++ b/lib/Qpsmtpd/SMTP.pm
@@ -135,7 +135,7 @@ sub transaction {
 sub reset_transaction {
   my $self = shift;
   $self->run_hooks("reset_transaction") if $self->{_transaction};
-  return $self->{_transaction} = Qpsmtpd::Transaction->new(connection => $self->connection);
+  return $self->{_transaction} = Qpsmtpd::Transaction->new();
 }
 
 
diff --git a/lib/Qpsmtpd/Transaction.pm b/lib/Qpsmtpd/Transaction.pm
index a04f996..55fd315 100644
--- a/lib/Qpsmtpd/Transaction.pm
+++ b/lib/Qpsmtpd/Transaction.pm
@@ -5,7 +5,7 @@ use strict;
 use Qpsmtpd::Utils;
 use Qpsmtpd::Constants;
 use Socket qw(inet_aton);
-use Time::HiRes qw(time);
+use Time::HiRes qw(gettimeofday);
 
 use IO::File qw(O_RDWR O_CREAT);
 
@@ -17,10 +17,11 @@ sub start {
   my %args = @_;
   
   # generate id
-  my $conn = $args{connection};
-  my $ip = $conn->remote_port || "0";
-  my $start = time;
-  my $id = "$start.$$.$ip";
+  # use gettimeofday for microsec precision
+  my ($start, $mstart) = gettimeofday();
+  # add in rand() in case gettimeofday clock is slow (e.g. bsd?)
+  # add in $$ in case srand is set per process
+  my $id = sprintf("%d.%06d.%d.%d", $start, $mstart, rand(10000), $$);
   
   my $self = { _rcpt => [], started => $start, _id => $id };
   bless ($self, $class);