I tried looking to see if my default Debian setup included a no-spam delay of some variety. I could find nothing in the configuration files relating to any delay, but I am no Exim guru. I gather from the delay you describe that the delay is a noticeable number of seconds. The error message I recieve shows up within 1 second of hitting the send button in RoundCube.
I.e. I hit send in round cube and my terminal window tailing the exim reject log immediatley shows the message I originally posted.
After searching different ways on google, I came up with this snippet regarding my error's note on 'pipelining'.
http://nixdoc.net/files/forum/about20046.html
Is anyone on this users-list familiar enough with RoundCube to know if it might be guilty of mis-delivering the DATA portion of the message via SMTP and thus tripping up Exim which is looking for a more rfc compliant SMTP session?
Is the timing possibly tripped up by a slow server, or a fast one? My server machine is a lowly Mac G3-300.. could it be doing some part of the processing too slowly? It doesn't seem that slow - RoundCube feels snappy.
At least I can check my mail with RoundCube...
...
On 3/21/06, Jon Daley <roundcube@jon.limedaley.com
> wrote: Are you intentionally delaying the greeting in order to stop
spammers? If so, how many seconds are you delaying? I see these sorts of
errors from spammers all the time.
Try turning debugging on, as it should print out stuff from the
smtp connection.
On Tue, 21 Mar 2006, Zoont Foomby wrote:
> Hi all!
>
> Just installed RoundCube to try it out. So far it looks good, runs fast, and
> feels smooth.
>
> One problem.
>
> When I send mail, RoundCube says the mail has been sent, but the mail never
> arrives. An examination of my Exim4 log shows the issue:
>
> 2006-03-21 01:27:02 SMTP protocol synchronization error (next input sent too
> soon: pipelining was advertised): rejected "MIME-Version:
1.0" H=localhost [
> 127.0.0.1] next input="Date: Tue, 21 Mar 2006 1:27:02 -0500\r\nFrom: xxxxx
> <xxxxx@>\r\nTo: xxxxxx@gmail.com\r\nSubject: Test 3\r\nMessage-ID: <
> fcba0dbf860c58463ee731c15a075a0c@loc"
>
> Exim4 is working fine for sending other mail. I can send mail through it
> with Mutt for example. It recieves mail fine too.
>
> Anyone seen this problem?