<div dir="ltr">Patrick-<div><br></div><div>Actually, nothing. I've got everything piped into /var/log/maillog and not too much there either beyond the actual error message.</div><div><br></div><div>Steve</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jun 1, 2018 at 9:23 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 01:21 PM, Stephen Ingram wrote:<br>
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I'm receiving a 451 4.3.0 System I/O error (in reply to end of DATA command) error from Postfix when trying to deliver to cyrus-imap and not really sure why. I'm on CentOS 7 (2.4.17-8) after downgrading from current version. I'm using Kerberos GSSAPI to connect to the front end, but authentication appears to be working fine as I can see authenticated when enabling LMTP debugging in Postifx. All messages are refused for delivery though. I'm not sure what to do. Any suggestions?<br>
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Should be something of value in /var/log/messages .<br>
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Steve<br>
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