I don't know if it's a bug or a feature. :)

After I sent a longer response to a customer, I only got a few lines in the ticket response thread. Here is what I sent him:

Dear xxxx,

our mailsystem is working correct, please check you configurations.

---------

To: xxx@xxxathy.net

=== Trying xxx.xxxx.ch...

=== Connected to xxx.xxxx.ch.

<- 220 xxx.xxxx.ch ESMTP ready.

-> EHLO xxx.xxxx.ch

<- 250-xxx.xxxx.ch Hello xxx.xxxx.ch

<- 250-SIZE 52428800

<- 250-PIPELINING

<- 250-STARTTLS

<- 250 HELP

-> MAIL FROM:<bes3502@xxx.xxxx.ch>

<- 250 OK

-> RCPT TO:<xxx@xxxx.net>

<- 250 Accepted

-> DATA

<- 354 Enter message, ending with "." on a line by itself

-> Date: Wed, 08 Sep 2010 08 +0200

-> To: xxx@xxxx.net

-> From: bes3502@xxx.xxxx.ch

-> Subject: test Wed, 08 Sep 2010 08 +0200

-> X-Mailer: swaks v20061116.0 jetmore.org/john/code/#swaks

->

-> This is a test mailing

->

-> .

<- 250 OK id=1OtEDe-00041g-3A

-> QUIT

<- 221 xxx.xxxx.ch closing connection

=== Connection closed with remote host.

---------

And this is what I see in the ticket thread:

Dear xxx

our mailsystem is working correct, please check you configurations.

-------------

=== Trying mx.actionpoint.ch...

=== Connected to mx.actionpoint.ch.

EHLO xxx.xxxx.ch

.

QUIT

I tested it again, and it seems, that the E-Mail was sent correctly.

And ideas?