What causes lmtpd to get a "System I/O error"?

Andreas Winkelmann ml at awinkelmann.de
Wed May 5 02:12:32 EDT 2004

Am Mittwoch, 5. Mai 2004 06:50 schrieb Rob Tanner:

> I've put up and testing a new install of cyrus-imapd-2.2.3 and postfix
> 2.0.19.  The one problem I'm seeing is using ther vacation capability
> of sieve although filing, discarding, rejecting, forwarding, etc all
> appear to work correctly.  Vacation responses generate a System I/O
> error, and an example from the maillog is quoted below:
> >  May  4 20:59:53 belgarath postfix/lmtp[22970]: 5CDE73C8247:
> >  to=<speters at linfield.edu>, orig_to=<steve.peters at linfield.edu>,
> >  relay=/var/imap/socket/lmtp[/var/imap/socket/lmtp], delay=17532,
> >  status=deferred (host /var/imap/socket/lmtp[/var/imap/socket/lmtp]
> >  said: 451 4.3.0 System I/O error (in reply to RCPT TO command))
> My experience tells me that this is probably either a missing file
> component or a permissions error, but I haven't been able to ferret it
> out.  Can anybody give me some pointers?

This is the lmtp-Client which tries to deliver to Cyrus. You should look in 
the Log, where Cyrus itself writes to. 


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