2009-07-27 01:55:50 SMTP protocol synchronization error (next input sent too soon: pipelining was
advertised): rejected "DATA" H=ipv6.he.net [2001:470:0:64::2] next input="To: \r\nFrom: ipv6@he.net\r
\nMessage-ID: <4a6d5d86d0209.1248681350@ipv6.he.net>\r\nSubject: IPv6 Certification Mail Test\r
\n\r\nPlease insert the following code"
I may have a similar problem with Exim version 4.76 #1 built 29-May-2011 18:23:23 on Debian: the test mail doesn't come through, but other regular emails are OK.
I have the following entries in /var/log/exim4/mainlog:
2011-09-15 17:43:19 H=ipv6.he.net [2001:470:0:64::2] F=<ipv6@he.net> temporarily rejected RCPT <ltp@serveur.LT-P.net>
2011-09-15 17:43:20 SMTP protocol synchronization error (next input sent too soon: pipelining was advertised): rejected "To:" H=ipv6.he.net [20
01:470:0:64::2] next input="From: ipv6@he.net\r\n"
I don't know what cause this.