[Kolab-devel] rejected mail with the following error: "does not match envelope"

[Peter Berry]

Hi,

I updated my Kolab2 install with the lastest packages and I am now getting
the following error for alot of legitimate incoming mail:

From: header. <mailaddress> does not match envelope
    <mailaddress>

sometimes the difference is upper and lower case between the addresses.

I suspect that some sterner anti spam controls have been implemented
somewhere along the way how can I turn them off?

cheers

Peter Berry