> 
> Albert Kim <[EMAIL PROTECTED]> wrote:
>>
>> When I use Yahoo Mail on one of my masqed boxes, I can't send out
>> e-mail with an attachment (it hangs).
>
> Someone just recently posted a problem very much like this.  Whenever he
> would generate a large amount of outgoing traffic, things would hang up.
> In your case, this is big e-mails vs. small e-mails.  Try an FTP upload
> and see if that exhibits the same behavior; it should.
>
> I think he solved the problem by fixing his modem.  He was driving it at
> too high a baud rate, or something.  It wasn't a masq problem at all
> (demonstratable by doing the FTP upload directly from the masq box).

This is a *really* common problem with a modem where the handshaking was
improperly set up.  For example, suppose that the modem defaults to software
handshaking (not a good thing on binary connections).  Then, one side sends
a Ctrl-S -- effectively telling the other modem to stop sending until the
first side tells it to.  Voila!  The transfer is halted "for all time".

You might want to make sure that your modem is set up for hardware
handshaking, or barring that, set up for *no* handshaking (with the baud
rate set *much* lower, so that the buffers never overflow).  Don't count on
an ATZ setting the modem to a known "high-speed" rate, *verify* that the
modem is set up correctly.  For example, I've had problems with my
Rockwell-based V.90 modem connecting to a 3com-based V.90 modem -- it hardly
ever connects.  So, I reset the modem to factory defaults with AT&F, turned
off V.90 (and 56Kflex), and wrote the defaults to my "alternate" modem
setting with AT&W1.  Now, all my machine has to do is ATZ1, and it is set up
with the "high-speed" (33.6K) configuration.  I've left the "main" modem
settings set to the default factory configuration (which I explicitly set
with AT&F and AT&W0 commands), so I can quickly switch back and forth simply
by specifying ATZ and ATZ1.

--
// Glenn L. Austin
// Computer Wizard and Race Car Driver
// mailto:[EMAIL PROTECTED]
// http://www.austin-home.com/glenn/

 


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