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

[Patrick Boutilier]

On 06/01/2018 01:31 PM, Stephen Ingram wrote:
> Patrick-
> 
> Actually, nothing. I've got everything piped into /var/log/maillog and 
> not too much there either beyond the actual error message.
> 

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.




> Steve
> 
> On Fri, Jun 1, 2018 at 9:23 AM, Patrick Boutilier <boutilpj at ednet.ns.ca 
> <mailto:boutilpj at ednet.ns.ca>> wrote:
> 
>     On 06/01/2018 01:21 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?
> 
> 
>     Should be something of value in /var/log/messages .
> 
> 
> 
> 
>         Steve
> 
> 
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> 
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