Thank you for your reply.
These messages are being seen in in the /var/log/mail.log on a 30 second
period. Nothing is being done (by me) outside of the normal processing of
messages by postfix that would be causing these. No external process is piping
anything to another program. This is a very vanilla setup.
I have tried to find what is causing the error and so far have come up empty.
Are there is any troubleshooting techniques I could use to identify where these
are originating?
On Fri, 2024-03-01 at 15:02 -0500, Wietse Venema via Postfix-users wrote:
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Paul Lemmons via Postfix-users:
I am getting the following message in my syslog exactly every 30
seconds. Everything is working but words like "Fatal" and "Input/output
error" cause me an inordinate amount of angst.
postfix/postqueue[<procid>]: fatal: output write error: Input/output error
A write(2) operation to the standard output stream failed,
and the last system error code was EIO (I/O error).
Postqueue will not complain about EPIPE (broken pipe) errors because
those are common when output is piped into a program. Postqueue output
is often piped into a program because the output can be long.
What was the output from postqueue being written to?
Wietse
Searching logs I can find nothing that points to why this is
happening. I found a post from 18 years ago where someone says
that it could be ignored but that was 18 years ago and pretty much
nothing on the topic since.
If this is a known issue, fine. If not, what is the best way to determine what
is causing it?
Hardware is a ESXi 7.0 Ubuntu 22.04 Postfix 3.6.4
All current as of the writing of this note.
--
Paul Lemmons
Lead Systems Engineer ? Systems and Databases
Tucson Medical Center Healthcare | Information Services
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