Re: [Sqlgrey-users] Excessive X-Greylist headers

[Alex R. <mys...@gm...>]

Hi Karl,

>> I'm not doubting what you're saying, but here's a thread that seems
>> to indicate it's the expected behavior:
>
> Looks like what I'm saying is wrong.  The policy
> daemon is called for each destination address.
> See the postfix SMTPD_POLICY_README.
>
>> Here's another one from Lionel discussing:
>>
>> http://sourceforge.net/p/sqlgrey/mailman/sqlgrey-users/thread/42F...@bo.../
>>
>> Could that be the solution here as well?
>
> "That" being rcpt_awl?  Dunno.
>
> Looks like as of postfix 2.1 there is an "instance"
> variable passed to the policy daemon that could be used
> to keep from adding multiple header lines.  It's not
> clear how this would work and it's not implemented
> in sqlgrey.
>
> Something for somebody's todo list.

Do you think sqlgrey is still the best option for doing greylisting with 
postfix, or are is there something else we should be looking it?

I originally thought policyd was an alternative, but it looks to be more 
of a front-end or management system that just uses apps like sqlgrey.

>> I'm going to have to use postfix to strip them because I believe it's
>> causing some mail to be rejected because the headers are too large.
>
> That sounds like a sensible approach.
>
> Since the policy check is smtpd you ought to be able
> to use header_checks = pcre:/etc/postfix/header_checks
> with file content of:
>
> /^X-Greylist: whitelisted by SQLgrey/ IGNORE
>
> I'd bet there's an even more clever way to
> "collapse" all the identical entries but
> haven't investigated.

Yes, that's exactly how I'm currently doing it.

Thanks again,
Alex