write errors

[Tom Kinghorn]

Good afternoon List.

I have started noticing a lot of queue write errors in the mail logs.

/var/log/mail:Jul 29 10:27:16 smtp1 amavis[17663]: (17663-01-11) (!)FWD
via SMTP: <i-scrap at vodamail.co.za> -> <sonja at mrnewby.co.za>,BODY=7BIT
451 4.3.0 from MTA([127.0.0.1]:10025): 451 4.3.0 Error: queue file write
error

/var/log/mail:Jul 29 10:27:14 smtp1 postfix/smtp[17885]: 8F59A13FC5:
host 127.0.0.1[127.0.0.1] said: 451 4.3.0 id=15427-01 - Temporary MTA
failure on relaying, from MTA([127.0.0.1]:10025): 451 4.3.0 Error: queue
file write error (in reply to end of DATA command)
#


Any ideas why this could be happening?

We are using Postfix, amavisd-new, clamav & spammassassin

Thanks

Tom