Author: Oliver Egginger Date: To: exim-users Subject: [Exim] SMTP protocol violation: synchronization error (Exim4)
Hello,
I would like to understand this.
Since yesterday we using Exim4 (version 4.05).
I have a perl-script which sends mail via the socket interface.
Previously (with Exim3) I had no problems with this script,
but with Exim4, when I first try to send mail,
Exim gives the following error:
12:52:38 SMTP protocol violation: synchronization error (next input sent too soon): rejected "DATA" H= ...
I fixed this by sending the script to sleep for one second,
after the EHLO command and after the DATA command.
Now it works again.
Why I have to wait after the EHLO and the DATA command?
Can someone explain matters to me ?
