Re: [exim] No greylisting for SRS-valid bounces

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Szerző: Peter Thomassen
Dátum:  
Címzett: exim-users
Tárgy: Re: [exim] No greylisting for SRS-valid bounces
On 03/28/2011 02:17 AM, Dave Evans wrote:
> On Mon, Mar 28, 2011 at 12:15:39AM -0400, Peter Thomassen wrote:
>> I implemented SRS as suggested in
>> http://www.assembla.com/wiki/show/file_sender/Configuring_SRS_with_Exim_(Debian_and_Ubuntu)


>> I would like to skip this defer ACL if the srs_bounce router (see URL
>> above) thinks that the recipient address is a valid SRS address because
>> in that case the message is most likely not spam.


>
> Use an acl_m_* variable.
>
> For example, you could have a variable called acl_m_any_srs which is true iff
> at least one recipient was accepted by the SRS router - that's probably good
> enough. All acl_m_* variables default (effectively) to the empty string, i.e.
> false. So have your srs_bounce router set some recognisable address_data, to
> let acl_smtp_rcpt know that it's an SRS address, then have acl_smtp_rcpt call
> verify=recipient, and set acl_m_any_srs=1 (true) if that special address_data
> was present. Then inspect acl_m_any_srs in acl_smtp_data.


This works great as you described, thanks.

Just for the record, I did the following:

Introduced new RCPT ACL:
warn    !condition     = ${if def:acl_m_valid_SRS}
         verify         = recipient/callout=20s,use_sender,defer_ok
    set acl_m_valid_SRS = $address_data
         condition      = ${if def:acl_m_valid_SRS}
         logwrite       = Valid SRS address, skipping greylisting.


Then, I added !condition = ${if def:acl_m_valid_SRS} to the appropriate
greylisting stanza in the DATA ACL.

Best,
Peter