Re: [courier-users] courier and greylisting and callback.

callback - a check of sender.
when local mail server recieve message, it temporary stop recieving after any header ( "to" usually) and try initialize simulation session of sending mail to adress $from.
if remote server hasn't that address in recipient's list, the incoming connection is closing and incoming mail rejects hard (usually).

my english is poor, but hope, that i not distort this description.


,------[J__r__me Blion <jerome.blion@free.fr> Thu, 14 Feb 2008 23:17:06 +0100]
|-=Devil_InSide=- a __crit :
|> has the courier this features?
|> early under windows i use mdaemon -- good windows mail server, wich has some features like greylisting, domain keys, spf and whitelist for each of thic services.
|> but i found just spf in a courier-mta.
|>
|> in any overviews in a web for exim and postfix i see possibility to reject server, those HELO has only a digits or keyword, but not only blacklisting by ip or network or mask of e-mail address (user@.domain. etc), how it written in courier documentation.
|> has the courier such possibilities?
|>
|> i think, that possibility to make a greylisting or callback is very useful for control the incoming spam --- on mdaemon greylisting was a good solution.
|> and on other servers i saw callback --- more interesting solution, as i think.
|>
|> in a debian repositories i found a "milter-greylist" -- can i use it with courier-mta ?
|> in description to this package i read that this filter for sendmail, but reading docs and mans for this package has to brood over more universality of this program.
|>
|Hello,
|
|You can use pythonfilter. It implements Greylisting.
|What do you mean when you talk about "callback" ?
|
|HTH.
|Jerome Blion.
|
|
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