On Mon, Mar 28, 2011 at 12:15:39AM -0400, Peter Thomassen wrote: > Hi, > > I implemented SRS as suggested in > http://www.assembla.com/wiki/show/file_sender/Configuring_SRS_with_Exim_(Debian_and_Ubuntu) > > Also, I have implemented greylisting as is done by the Ubuntu/Debian > greylistd package. The greylisting for messages with an empty MAIL FROM > command is done in the DATA ACL (and not at RCPT), to prevent messing up > third party callout verify attempts. > > 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. > > However, there's a bunch of problems, as we are at the DATA stage. The > number of recipients could be greater than one; then, greylisting would > be desirable. Also I do not know how to best ask the srs_bounce router > for its opinion. I tried using $address_data which did not work out, > probably because there is no recipient verify at this stage (again > because there may be several recipients, I think).
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. -- Dave Evans http://djce.org.uk/ http://djce.org.uk/pgpkey
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