Klint Gore wrote:
> On Mon, 28 Aug 2006 14:49:31 -0700, "Don DeCosta" <[EMAIL PROTECTED]> wrote:
> > I have one person that can't get an e-mail to us. The error
> they receive
> > is:
> >
> > MailEnable: Message Delivery Failure.
> >
> > The following recipient(s) could not be reached:
> >
> > Recipient: [SMTP:[EMAIL PROTECTED]
> > Reason: 500 Syntax error, command unrecognized
> >
> >
> >
> > Of course the real message has a valid e-mail address in it... I'm
curious
> > if the problem is the SMTP: but the mail agent is Outlook so I can't
really
> > blame it. Even if I could, it's best not to blame the 800 pound gorilla.
>
> The message isnt the problem. It wont be outlook, it'll be the mail
> server that they use to send the mail. It's sent some command that isnt
> a SMTP command.
>
> Find out what their SMTP posting host is and telnet to it's port 25. It
> should identify itself (i.e. it's product name) when you connect. Once
> we know what that is, we can look up what it supports and maybe find the
> offending command.
I agree with Klint. Another way to find out the problem is to install TF
Gateway and set it to debugging; when it sends the 500 message (or whatever
it sends), the cause can be logged and then we can decide what to do about
it (if anything can).
TF Gateway? What's that you say? It is a stand-alone version of TF that can
run in front of any mail server, and remains loaded at all times (thus the
overhead is much less than the plugin versions). It can filter incoming mail
and outgoing mail (and also can block incoming mail), and it can use limited
filtering for outbound mail. (Also, when it filters outbound mail, it will
handle the delivery, which neatly eliminates the issues with the IMS
delivery to Hotmail and AOL. Indeed, problems delivering to Hotmail was the
primary reason I wrote this version now.)
TF Gateway is still in testing and hasn't been made available to anyone yet
(I wasn't going to do that while I was on vacation, because I didn't want a
major problem to surface while I was away). And the installation is really
clunky (I haven't made it a real service yet, and thus it runs under
Srvany). Contact me if you want to try it [Warning: I haven't figured out a
way to run it in front of IMS without using an extra machine. SMTPRCV needs
to listen for mail on a different port than 25 for that; while the UI has
such a capability, the post number is never written anywhere so the program
can't use it (and so far as I can tell, the source code has the 25
hard-coded). I tried to make this work during the early testing of Gateway
and failed; in the end, I just switched back and forth from TF Gateway
to/from IMS on my Gateway machine -- which provided some interesting
failures since I had to test on the live mail stream. But this really
belongs on the Trash Finder list anyway].
Randy.
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