* Vincent Danen <[EMAIL PROTECTED]> [2007-02-01 11:49:06 -0700]: > > >> Can you tell what MTA they are using? > > > > > > Yeah, they're using exim 4.63 (I'm using 4.5x). I thought it would be a > > > sender-verification request too, but that doesn't explain why it worked > > > with the telnet "test" but fails when my exim talks to theirs. > > > > > > > > > > Timing, perhaps? > > > > Ex: - if you have banner delay and they have a callout timeout that is hte > > same > > - or shorter, what with setup and link turnaround times.. > > I'm thinking this is it. But it doesn't look like they're doing sender > verification at all. > > I read the "RCPT delays and PIPELINING" thread with much interest after > I wrote my last message on this where it seems that pipelining is being > the culprit here. I have no idea how their server is setup, but seems > like there are some delays there that interfere with pipelining (as I > did a manual esmtp connection, no STARTTLS, no PIPELINING, and it was > delivered). > > So, the question is, can I disable pipelining for one particular host > (in the current exim)? Or disable pipelining for outbound mail > altogether? > > I've got to read the manual on that one. I've never had to think about > pipelining before.
Looks like I might have to wait for the new version of exim to do this.
I set:
pipelining_advertise_hosts = 127.0.0.1
smtp_enforce_sync = true
but on outgoing connections if the remote advertises pipelining, seems
like exim will use it no matter what I want.
Sucks, but looks like there isn't a whole lot I can do about this at the
moment, which is unfortunate. Well, I could use a snapshot I guess but
that doesn't sound like much of a good idea for a production system.
Thanks for all the tips/pointers and such, but I think until the new
exim comes out, there isn't much I can do here.
Unless someone else has some creative magic for me to try, of course.
=)
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