--On 14 August 2006 08:46:18 -0400 Barry Warsaw <barry@python.org> wrote:
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On Aug 14, 2006, at 5:44 AM, Ian Eiloart wrote:
This thread arose because someone claimed that SubEtha didn't suck. My comment was that the developers choice of auto-moderation instead of SMTP time rejection was a missed opportunity. It's probably easier to implement, and more frequently the desired behaviour for a closed list. The developers' didn't seem to think SMTP time rejection was desireable, and I think that sucks.
Certainly given sufficient hooks in the MTA, you might be able to make various decisions about the acceptability of a message at SMTP time, although it depends on where in the SMTP dialog you want to hook in.
After "RCPT TO". At that point, if a person isn't allowed to post to the list, the best thing to do is to reject the message. Of the lists I manage, 99% of attempts to post to the list by non-members are spam. Auto-moderation, as you've described, would make sense for some of the lists that I host.
There's no magic in Mailman that would prevent that -- a bit of Python would do the trick.
It's not something I'd personally develop because by definition, integration is highly MTA dependent, but I'd accept contributions and would be willing to improve the Mailman infrastructure to make things easier (e.g. see some of the re-org I'm doing in the 2.2 branch to move functionality out of scripts and into the Mailman package so that 3rd party Python code can get to it).
One thing that would make integration easier, would be a script bin/may_post (or something), which takes a list name (ideally qualified with domain) and sender address, and returns true if the sender address is allowed to post, and false otherwise.
- -Barry
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-- Ian Eiloart IT Services, University of Sussex