X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/d502442ac32f8964f6cf86469869cecb035d12c0..972af88e604546ee2ab1f817b8a098056065dd78:/doc/doc-txt/experimental-spec.txt?ds=sidebyside diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt index 6657f63c7..d8bd0bf46 100644 --- a/doc/doc-txt/experimental-spec.txt +++ b/doc/doc-txt/experimental-spec.txt @@ -762,87 +762,94 @@ b. Configure, somewhere before the DATA ACL, the control option to Transport post-delivery actions -------------------------------------------------------------- -An arbitrary per-transport string can be expanded on successful delivery, +An arbitrary per-transport string can be expanded upon various transport events and (for SMTP transports) a second string on deferrals caused by a host error. +Additionally a main-section configuration option can be expanded on some +per-message events. This feature may be used, for example, to write exim internal log information (not available otherwise) into a database. -In order to use the feature, you must set +In order to use the feature, you must compile with EXPERIMENTAL_TPDA=yes in your Local/Makefile -and define the expandable strings in the runtime config file, to -be executed at end of delivery. +and define one or both of +- the tpda_event_action option in the transport +- the delivery_event_action +to be expanded when the event fires. -Additionally, there are 6 more variables, available at end of -delivery: +A new variable, $tpda_event, is set to the event type when the +expansion is done. The current list of events is: -tpda_delivery_ip IP of host, which has accepted delivery -tpda_delivery_port Port of remote host which has accepted delivery -tpda_delivery_fqdn FQDN of host, which has accepted delivery -tpda_delivery_local_part local part of address being delivered -tpda_delivery_domain domain part of address being delivered -tpda_delivery_confirmation SMTP confirmation message + msg:complete main per message + msg:delivery transport per recipient + msg:host:defer transport per attempt + msg:fail:delivery main per recipient + msg:fail:internal main per recipient + tcp:connect transport per connection + tcp:close transport per connection + tls:cert transport per certificate in verification chain + smtp:connect transport per connection -In case of a deferral caused by a host-error: -tpda_defer_errno Error number -tpda_defer_errstr Error string possibly containing more details +The expansion is called for all event types, and should use the $tpda_event +value to decide when to act. The variable data is a colon-separated +list, describing an event tree. -The $router_name and $transport_name variables are also usable. +There is an auxilary variable, $tpda_data, for which the +content is event_dependent: + msg:delivery smtp confirmation mssage + msg:host:defer error string + tls:cert verification chain depth + smtp:connect smtp banner -To take action after successful deliveries, set the following option -on any transport of interest. +The msg:host:defer event populates one extra variable, $tpda_defer_errno. + +The following variables are likely to be useful depending on the event type: + + router_name, transport_name + local_part, domain + host, host_address, host_port + tls_out_peercert + lookup_dnssec_authenticated, tls_out_dane + sending_ip_address, sending_port + message_exim_id -tpda_delivery_action An example might look like: -tpda_delivery_action = \ -${lookup pgsql {SELECT * FROM record_Delivery( \ +tpda_event_action = ${if = {msg:delivery}{$tpda_event} \ +{${lookup pgsql {SELECT * FROM record_Delivery( \ '${quote_pgsql:$sender_address_domain}',\ '${quote_pgsql:${lc:$sender_address_local_part}}', \ - '${quote_pgsql:$tpda_delivery_domain}', \ - '${quote_pgsql:${lc:$tpda_delivery_local_part}}', \ - '${quote_pgsql:$tpda_delivery_ip}', \ - '${quote_pgsql:${lc:$tpda_delivery_fqdn}}', \ - '${quote_pgsql:$message_exim_id}')}} - -The string is expanded after the delivery completes and any + '${quote_pgsql:$domain}', \ + '${quote_pgsql:${lc:$local_part}}', \ + '${quote_pgsql:$host_address}', \ + '${quote_pgsql:${lc:$host}}', \ + '${quote_pgsql:$message_exim_id}')}} \ +} {}} + +The string is expanded for each of the supported events and any side-effects will happen. The result is then discarded. Note that for complex operations an ACL expansion can be used. -In order to log host deferrals, add the following option to an SMTP -transport: - -tpda_host_defer_action - -This is a private option of the SMTP transport. It is intended to -log failures of remote hosts. It is executed only when exim has -attempted to deliver a message to a remote host and failed due to -an error which doesn't seem to be related to the individual -message, sender, or recipient address. -See section 47.2 of the exim documentation for more details on how -this is determined. - -Example: - -tpda_host_defer_action = \ -${lookup mysql {insert into delivlog set \ - msgid = '${quote_mysql:$message_exim_id}', \ - senderlp = '${quote_mysql:${lc:$sender_address_local_part}}', \ - senderdom = '${quote_mysql:$sender_address_domain}', \ - delivlp = '${quote_mysql:${lc:$tpda_delivery_local_part}}', \ - delivdom = '${quote_mysql:$tpda_delivery_domain}', \ - delivip = '${quote_mysql:$tpda_delivery_ip}', \ - delivport = '${quote_mysql:$tpda_delivery_port}', \ - delivfqdn = '${quote_mysql:$tpda_delivery_fqdn}', \ - deliverrno = '${quote_mysql:$tpda_defer_errno}', \ - deliverrstr = '${quote_mysql:$tpda_defer_errstr}' \ - }} +The expansion of the tpda_event_action option should normally +return an empty string. Should it return anything else the +following will be forced: + + msg:delivery (ignored) + msg:host:defer (ignored) + msg:fail:delivery (ignored) + tcp:connect do not connect + tcp:close (ignored) + tls:cert refuse verification + smtp:connect close connection + + + Redis Lookup