Cyrus and Postfix

[Christoph Burger-Scheidlin]

Hi,

I have the following error in Cyrus-Postfix, that I do not know how to
fix:

Dec  5 23:03:25 Hades postfix/lmtp[16388]: 04316100F:
to=<cbs at localhost.hades.olymp>, relay=public/lmtp[public/lmtp],
delay=21490, status=deferred (host public/lmtp[public/lmtp] said: 451
4.3.0 System I/O error)
Dec  5 23:03:25 Hades postfix/lmtp[16387]: AFB60100E:
to=<cbs at localhost.hades.olymp>, relay=public/lmtp[public/lmtp],
delay=21840, status=deferred (host public/lmtp[public/lmtp] said: 451
4.3.0 System I/O error)

Cyrus and Postfix are communicating with an lmtp pipe.

Any ideas?

Thanks in advance.