<div dir="ltr">Patrick-<div><br></div><div>I'm also trying to get more debugging about he system I/O error, but never see it in the cyrus logs, only in the postfix logs.</div><div><br></div><div>Steve</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jun 1, 2018 at 9:37 AM, Patrick Boutilier <span dir="ltr"><<a href="mailto:boutilpj@ednet.ns.ca" target="_blank">boutilpj@ednet.ns.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 06/01/2018 01:31 PM, Stephen Ingram wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Patrick-<br>
<br>
Actually, nothing. I've got everything piped into /var/log/maillog and not too much there either beyond the actual error message.<br>
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Hmmm... Usually when I have seen the System I/O error the log entry also records what the actual directory/file that it wants to write to. Going by memory here since it has been a long time since I have seen the error.<br>
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Steve<div><div class="h5"><br>
<br>
On Fri, Jun 1, 2018 at 9:23 AM, Patrick Boutilier <<a href="mailto:boutilpj@ednet.ns.ca" target="_blank">boutilpj@ednet.ns.ca</a> <mailto:<a href="mailto:boutilpj@ednet.ns.ca" target="_blank">boutilpj@ednet.ns.ca</a>>> wrote:<br>
<br>
    On 06/01/2018 01:21 PM, Stephen Ingram wrote:<br>
<br>
        I'm receiving a 451 4.3.0 System I/O error (in reply to end of<br>
        DATA command) error from Postfix when trying to deliver to<br>
        cyrus-imap and not really sure why. I'm on CentOS 7 (2.4.17-8)<br>
        after downgrading from current version. I'm using Kerberos<br>
        GSSAPI to connect to the front end, but authentication appears<br>
        to be working fine as I can see authenticated when enabling LMTP<br>
        debugging in Postifx. All messages are refused for delivery<br>
        though. I'm not sure what to do. Any suggestions?<br>
<br>
<br>
    Should be something of value in /var/log/messages .<br>
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        Steve<br>
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