I've received reports by some users that messages
are being duplicated. After a fair amount of head
scratching it seems that a Microsoft Exchange serer
is connecting to qpsmtpd and sending:
1. HELO blah.
2. MAIL FROM: <[email protected]>
3. RCPT TO: <[email protected]>
4. DATA
5 .
6. RSET
7. MAIL FROM:<[email protected]>
8. RCPT TO:<[email protected]>
9 ...
This sequence can repeat multiple times though
I cannot seem to find why the RSET is being issued
by the client side. At each step my plugins are
returning the correct responses (e.g. "250 QUEUED"
after the DATA phase). Of course the MS-Exchange
admin believes their server is working correctly
and nobody else is reporting problems.
Temporarily I've disabled the "RSET" command in
SMTP.pm. I wonder if there is any interest in supporting
hooks for this protocol command? Perhaps soemthing like
this:
diff --git a/lib/Qpsmtpd/SMTP.pm b/lib/Qpsmtpd/SMTP.pm
index f669055..5940b4f 100644
--- a/lib/Qpsmtpd/SMTP.pm
+++ b/lib/Qpsmtpd/SMTP.pm
@@ -555,8 +555,15 @@ sub vrfy_respond {
sub rset {
my $self = shift;
- $self->reset_transaction;
- $self->respond(250, "OK");
+ $self->run_hooks("rset");
+}
+
+sub rset_respond {
+ my ($self, $rc, $msg, $args) = @_;
+ if ($rc == OK) {
+ $self->reset_transaction;
+ }
+ $self->respond($rc, @$msg);
}
That's a quick hack, but I guess it shows
the process .. not that the hook behaviour
would need to be too different to others..
Steve
--
Debian GNU/Linux System Administration
http://www.debian-administration.org/
