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<div>Hello,</div>
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<div>I have following problem:</div>
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<div>2015-11-19 11:59:06 SMTP protocol synchronization error (input sent without waiting for greeting): rejected connection from H=xxx [w.x.y.z] input="quit\r\n"<br /><br />root@host:~# telnet w.x.y.z 25<br />Trying w.x.y.z...<br />Connected to w.x.y.z.<br />Escape character is '^]'.<br />quit<br />554 SMTP synchronization error<br />Connection closed by foreign host.<br />root@host:~# telnet w.x.y.z 25<br />Trying w.x.y.z...<br />Connected to w.x.y.z.<br />Escape character is '^]'.<br />220 wxyz ESMTP Exim 4.80 Thu, 19 Nov 2015 11:59:10 +0100<br />quit<br />221 wxyz closing connection<br />Connection closed by foreign host.<br />root@host:~#<br /><br />Sometime I get an SMTP synchronization error - the same problem like here:
http://www.gossamer-threads.com/lists/exim/users/54261</div>
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<div>Here I found a solution:<br />
http://www.exim.org/exim-html-4.50/doc/html/spec_39.html#IX2477</div>
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<div>adding <span style="color:green"><strong>control = no_enforce_sync</strong></span> to acl_smtp_connect file should help but it does not. :-(</div>
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<div>Is there any solution that the synchronization error disappears?</div>
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<div>Where does this synchronization error come from?</div>
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<div>Regards</div>
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