-Event Actions
---------------------------------------------------------------
-
-(Renamed from TPDA, Transport post-delivery actions)
-
-An arbitrary per-transport string can be expanded upon various transport events.
-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 compile with
-
-EXPERIMENTAL_EVENT=yes
-
-in your Local/Makefile
-
-and define one or both of
-- the event_action option in the transport
-- the event_action main option
-to be expanded when the event fires.
-
-A new variable, $event_name, is set to the event type when the
-expansion is done. The current list of events is:
-
- msg:complete after main per message
- msg:delivery after transport per recipient
- msg:rcpt:host:defer after transport per recipient per host
- msg:rcpt:defer after transport per recipient
- msg:host:defer after transport per attempt
- msg:fail:delivery after main per recipient
- msg:fail:internal after main per recipient
- tcp:connect before transport per connection
- tcp:close after transport per connection
- tls:cert before both per certificate in verification chain
- smtp:connect after transport per connection
-
-The expansion is called for all event types, and should use the $event_name
-variable to decide when to act. The value of the variable is a colon-separated
-list, defining a position in the tree of possible events; it may be used as
-a list or just matched on as a whole. There will be no whitespace.
-
-New event types may be added in the future.
-
-
-There is an auxilary variable, $event_data, for which the
-content is event_dependent:
-
- msg:delivery smtp confirmation mssage
- msg:rcpt:host:defer error string
- msg:rcpt:defer error string
- msg:host:defer error string
- tls:cert verification chain depth
- smtp:connect smtp banner
-
-The :defer events populate one extra variable, $event_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, verify_mode
-
-
-An example might look like:
-
-event_action = ${if eq {msg:delivery}{$event_name} \
-{${lookup pgsql {SELECT * FROM record_Delivery( \
- '${quote_pgsql:$sender_address_domain}',\
- '${quote_pgsql:${lc:$sender_address_local_part}}', \
- '${quote_pgsql:$domain}', \
- '${quote_pgsql:${lc:$local_part}}', \
- '${quote_pgsql:$host_address}', \
- '${quote_pgsql:${lc:$host}}', \
- '${quote_pgsql:$message_exim_id}')}} \
-} {}}
-
-The string is expanded when each of the supported events occur
-and any side-effects of the expansion will happen.
-
-Note that for complex operations an ACL expansion can be used,
-however due to the multiple contexts the Exim operates in
-a) variables set in events raised from transports will not
- be visible outside that transport call.
-b) acl_m variables in a server context are lost on a new connection,
- and after helo/ehlo/mail/starttls/rset commands
-Using an ACL expansion with the logwrite modifier can be a
-useful way of writing to the main log.
-
-
-
-The expansion of the 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
-
-No other use is made of the result string.
-
-If transport proxying is used, the remote IP/port during a
-tcp:connect event will be that of the proxy.
-
-
-Known issues:
-- the tls:cert event is only called for the cert chain elements
- received over the wire, with GnuTLS. OpenSSL gives the entire
- chain including those loaded locally.
-
-
Redis Lookup
--------------------------------------------------------------
-INTERNATIONAL
-------------------------------------------------------------
-SMTPUTF8
-Internationalised mail name handling.
-RFCs 6530, 6533, 5890
-
-Compile with EXPERIMENTAL_INTERNATIONAL and libidn.
-
-New main config option smtputf8_advertise_hosts, default '*',
-a host list. If this matches the sending host and
-accept_8bitmime is true (the default) then the ESMTP option
-SMTPUTF8 will be advertised.
-
-If the sender specifies the SMTPUTF8 option on a MAIL command
-international handling for the message is enabled and
-the expansion variable $message_smtputf8 will have value TRUE.
-
-The option allow_utf8_domains is set to true for this
-message. All DNS lookups are converted to a-label form
-whatever the setting of allow_utf8_domains.
-
-Both localparts and domain are maintained as the original
-utf8 form internally; any matching or regex use will
-require appropriate care. Filenames created, eg. by
-the appendfile transport, will have utf8 name.
-
-Helo names sent by the smtp transport will have any utf8
-components expanded to a-label form.
-
-Any certificate name checks will be done using the a-label
-form of the name.
-
-Log lines and Received-by: header lines will aquire a "utf8"
-prefix on the protocol element, eg. utf8esmtp.
-
-New expansion operators:
- ${utf8_domain_to_alabel:str}
- ${utf8_domain_from_alabel:str}
- ${utf8_localpart_to_alabel:str}
- ${utf8_localpart_from_alabel:str}
-
-New "control = utf8_downconvert" ACL modifier,
-sets a flag requiring that addresses are converted to
-a-label form before smtp delivery, for use in a
-Message Submission Agent context. Can also be
-phrased as "control = utf8_downconvert/1" and is
-mandatory. The flag defaults to zero and can be cleared
-by "control = utf8_downconvert/0". The value "-1"
-may also be used, to use a-label for only if the
-destination host does not support SMTPUTF8.
-
-If mua_wrapper is set, the utf8_downconvert control
-defaults to -1 (convert if needed).
-
-
-There is no explicit support for VRFY and EXPN.
-Configurations supporting these should inspect
-$smtp_command_argument for an SMTPUTF8 argument.
-
-There is no support for LMTP on Unix sockets.
-Using the "lmtp" protocol option on an smtp transport,
-for LMTP over TCP, should work as expected.
-
-Known issues:
- - DSN unitext handling is not present
- - no provision for converting logging from or to UTF-8
-
-----
-IMAP folder names
-
-New expansion operator:
-
-${imapfolder {<string>} {<sep>} {<specials>}}
-
-The string is converted from the charset specified by the headers charset
-command (in a filter file) or headers_charset global option, to the
-modified UTF-7 encoding specified by RFC 2060, with the following
-exception: All occurences of <sep> (which has to be a single character)
-are replaced with periods ("."), and all periods and slashes that aren't
-<sep> and are not in the <specials> string are BASE64 encoded.
-
-The third argument can be omitted, defaulting to an empty string.
-The second argument can be omitted, defaulting to "/".
-
-This is the encoding used by Courier for Maildir names on disk, and followed
-by many other IMAP servers.
-
- Example 1: ${imapfolder {Foo/Bar}} yields "Foo.Bar".
- Example 2: ${imapfolder {Foo/Bar}{.}{/}} yields "Foo&AC8-Bar".
- Example 3: ${imapfolder {Räksmörgås}} yields "R&AOQ-ksm&APY-rg&AOU-s".
-
-Note that the source charset setting is vital, and also that characters
-must be representable in UTF-16.
-
-
-
DSN extra information
---------------------
If compiled with EXPERIMENTAL_DSN_INFO extra information will be added
projects / exim.git / blobdiff