Re: System I/O error (in reply to end of DATA command) for LMTP delivery

Ken Murchison <murch@xxxxxxxxxxxx> · Fri, 1 Jun 2018 12:54:09 -0400



    OTH, my guess is that Cyrus is failing to create the tmpfile to
      stage the message.  Is /tmp (or its equivalent) full, or not
      writeable?
    Without something from the Cyrus syslog, this will be hard to
      diagnose.

    
    On 06/01/2018 12:51 PM, Stephen Ingram
      wrote:

    
      Ken-
        

        That all appears to be working correctly. Here's a cut from
          the Postfix debug with addresses obfuscated:
        

          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr offset
            = 682
          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr
            dsn_orig_rcpt = rfc822;x@xxxxx
          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr
            notify_flags = 0
          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr status
            = 4.3.0
          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr
            diag_type = smtp
          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr
            diag_text = 451 4.3.0 System I/O error
          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr
            mta_type = dns
          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr
            mta_mname = imap.x.x
          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr action
            = "">
          Jun  1 16:48:52 mx postfix/lmtp[18136]: send attr reason
            = host imap.x.x[10.0.13.83] said: 451 4.3.0 System I/O error
            (in reply to end of DATA command)
          Jun  1 16:48:52 mx postfix/lmtp[18136]: private/defer
            socket: wanted attribute: status
          Jun  1 16:48:52 mx postfix/lmtp[18136]: input attribute
            name: status
          Jun  1 16:48:52 mx postfix/lmtp[18136]: input attribute
            value: 0
          Jun  1 16:48:52 mx postfix/lmtp[18136]: private/defer
            socket: wanted attribute: (list terminator)
          Jun  1 16:48:52 mx postfix/lmtp[18136]: input attribute
            name: (end)
          Jun  1 16:48:52 mx postfix/lmtp[18136]: B7B0B9A2EB0:
            to=<x@x.x>, orig_to=<x@x.x>,
            relay=imap.x.x[10.0.13.83]:24, delay=0.3,
            delays=0.19/0/0.09/0.02, dsn=4.3.0, status=deferred (host
            imap.x.x[10.0.13.83] said: 451 4.3.0 System I/O error (in
            reply to end of DATA command))
        
        
        Steve
      
      
        On Fri, Jun 1, 2018 at 9:33 AM, Ken
          Murchison <murch@xxxxxxxxxxxx>
          wrote:

          On 6/1/18 12:21 PM, Stephen Ingram wrote:

              
                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?

              
            Any chance that Kerberos is negotiating a security layer?

                
                -- 

                Kenneth Murchison

                Cyrus Development Team

                FastMail Pty Ltd
            
              
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    -- 
Ken Murchison
Cyrus Development Team
FastMail US LLC
  

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