mailing list not obeying sender filter

HI All,
I am trying to set up a mailing list for unix/linux servers to mail into, and then out to the llinux admins.
I have added the postmaster@fqdn and mailer-daemon@fqdn for each server to the privacy-option -> sender-filter -> non-member filters box and done a submit, but the system is still asking me to moderate the emails...while I just want them accepted and posted.
So this seems to be failing, what have I missed or is something broken?
I then tried to set,
"Action to take for postings from non-members for which no explicit action is defined". To accept
but it still carries on asking each post to be moderated, so I assume something is not responding within mailman, or I have mis-set something.
Any suggestions?
Thanks
Steven

Thus spake Steven Jones on Tue, Jan 31, 2006 at 08:00:31PM CST
What's the envelope sender address ("rcpt to") for these messages? Is it perhaps an address that subscribed with the mod flag set? It's possible to have one address in the body "From" header and another in the envelope sender address, and I'm not sure which takes precedence, but I believe that if one is found among the subscribed members, and the mod flag is set for that address, then that trumps the allowed non-members list.
I could be all wet on this, but I've seen the same problem with some of my customers' lists from time to time and it's always something wonky like this.
-- Lindsay Haisley | "Fighting against human | PGP public key FMP Computer Services | creativity is like | available at 512-259-1190 | trying to eradicate | <http://pubkeys.fmp.com> http://www.fmp.com | dandelions" | | (Pamela Jones) |

Steven Jones wrote:
Check also the recipient filter.
-- Tokio Kikuchi, tkikuchi@ is.kochi-u.ac.jp http://weather.is.kochi-u.ac.jp/

Thus spake Steven Jones on Tue, Jan 31, 2006 at 08:00:31PM CST
What's the envelope sender address ("rcpt to") for these messages? Is it perhaps an address that subscribed with the mod flag set? It's possible to have one address in the body "From" header and another in the envelope sender address, and I'm not sure which takes precedence, but I believe that if one is found among the subscribed members, and the mod flag is set for that address, then that trumps the allowed non-members list.
I could be all wet on this, but I've seen the same problem with some of my customers' lists from time to time and it's always something wonky like this.
-- Lindsay Haisley | "Fighting against human | PGP public key FMP Computer Services | creativity is like | available at 512-259-1190 | trying to eradicate | <http://pubkeys.fmp.com> http://www.fmp.com | dandelions" | | (Pamela Jones) |

Steven Jones wrote:
Check also the recipient filter.
-- Tokio Kikuchi, tkikuchi@ is.kochi-u.ac.jp http://weather.is.kochi-u.ac.jp/
participants (3)
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Lindsay Haisley
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Steven Jones
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Tokio Kikuchi