Strange problem with scanner

Hi,

I have a mail server to which several Kyocera multifunction
scanner/printers are connected. When a document is scanned, these
devices can mail the scanned image through a mail account at the
server. They each include a mail client. The problem is that they all
complain about being unable to find the mail server. This happens at
totally unexpected times and then, they suddenly start working again,
as they normally have. The failure does not have a pattern: it may
happen once a month and twice in a single week or day.

Does any of you have an idea of what this problem might be, or have
run across a similar situation?

Thanks
Gerardo
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Re: Strange problem with scanner

Gerardo Juarez-Mondragon wrote:

> I have a mail server to which several Kyocera multifunction
> scanner/printers are connected. When a document is scanned, these
> devices can mail the scanned image through a mail account at the
> server. They each include a mail client. The problem is that they all
> complain about being unable to find the mail server. This happens at
> totally unexpected times and then, they suddenly start working again,
> as they normally have. The failure does not have a pattern: it may
> happen once a month and twice in a single week or day.
>
> Does any of you have an idea of what this problem might be, or have
> run across a similar situation?

Unless there's something relevant in the log files, I wouldn't waste
time trying to debug this through trial-and-error.

Use tcpdump (or similar) to monitor all traffic to/from the devices
For TCP, only log packets with the SYN or FIN flags (to avoid filling
the logs with bulk data transfers), but any non-TCP (including non-IP)
packets should be logged.

--
Glynn Clements
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