diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/doc-docbook/spec.xfpt | 186 | ||||
| -rw-r--r-- | doc/doc-txt/ChangeLog | 3 | ||||
| -rw-r--r-- | doc/doc-txt/experimental-spec.txt | 96 |
3 files changed, 182 insertions, 103 deletions
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt index 418cb1a11..aabf85865 100644 --- a/doc/doc-docbook/spec.xfpt +++ b/doc/doc-docbook/spec.xfpt @@ -9373,6 +9373,19 @@ you can use condition = ${if >{$acl_m4}{3}} .endd + + +.new +.vitem &*${imapfolder{*&<&'foldername'&>&*}}*& +.cindex expansion "imap folder" +.cindex "&%imapfolder%& expansion item" +This item converts a (possibly multilevel, or with non-ASCII characters) +folder specification to a Maildir name for filesystem use. +For information on internationalisation support see &<<SECTi18nMDA>>&. +.wen + + + .vitem &*${length{*&<&'string1'&>&*}{*&<&'string2'&>&*}}*& .cindex "expansion" "string truncation" .cindex "&%length%& expansion item" @@ -10464,6 +10477,23 @@ This forces the letters in the string into upper-case. .cindex "expansion" "utf-8 forcing" .cindex "&%utf8clean%& expansion item" This replaces any invalid utf-8 sequence in the string by the character &`?`&. + +.new +.vitem "&*${utf8_domain_to_alabel:*&<&'string'&>&*}*&" &&& + "&*${utf8_domain_from_alabel:*&<&'string'&>&*}*&" &&& + "&*${utf8_localpart_to_alabel:*&<&'string'&>&*}*&" &&& + "&*${utf8_localpart_from_alabel:*&<&'string'&>&*}*&" +.cindex expansion UTF-8 +.cindex UTF-8 expansion +.cindex EAI +.cindex internationalisation +.cindex "&%utf8_domain_to_alabel%& expansion item" +.cindex "&%utf8_domain_from_alabel%& expansion item" +.cindex "&%utf8_localpart_to_alabel%& expansion item" +.cindex "&%utf8_localpart_from_alabel%& expansion item" +These convert EAI mail name components between UTF-8 and a-label forms. +For information on internationalisation support see &<<SECTi18nMTA>>&. +.wen .endlist @@ -13615,6 +13645,7 @@ See also the &'Policy controls'& section above. .row &%ignore_fromline_local%& "allow &""From ""& from local SMTP" .row &%pipelining_advertise_hosts%& "advertise pipelining to these hosts" .row &%prdr_enable%& "advertise PRDR to all hosts" +.row &%smtputf8_advertise_hosts%& "advertise SMTPUTF8 to these hosts" .row &%tls_advertise_hosts%& "advertise TLS to these hosts" .endtable @@ -16378,6 +16409,17 @@ example, instead of &"Administrative prohibition"&, it might give: 550 failing address in "From" header is: <user@dom.ain .endd + +.new +.option smtputf8_advertise_hosts main "host list&!!" * +.cindex "SMTPUTF8" "advertising" +When Exim is built with support for internationalised mail names, +the availability therof is advertised in +response to EHLO only to those client hosts that match this option. See +chapter &<<CHAPi18n>>& for details of Exim's support for internationalisation. +.wen + + .option spamd_address main string "see below" This option is available when Exim is compiled with the content-scanning extension. It specifies how Exim connects to SpamAssassin's &%spamd%& daemon. @@ -28665,6 +28707,13 @@ data is read. &*Note:*& This control applies only to the current message, not to any others that are being submitted at the same time using &%-bs%& or &%-bS%&. + +.new +.vitem &*control&~=&~utf8_downconvert*& +This control enables conversion of UTF-8 in message addresses +to a-label form. +For details see &<<SECTi18nMTA>>&. +.wen .endlist vlist @@ -35215,6 +35264,7 @@ extensions (ESMTP), encryption, or authentication were used. If the SMTP session was encrypted, there is an additional X field that records the cipher suite that was used. +.cindex log protocol The protocol is set to &"esmtpsa"& or &"esmtpa"& for messages received from hosts that have authenticated themselves using the SMTP AUTH command. The first value is used when the SMTP connection was encrypted (&"secure"&). In this case @@ -35385,6 +35435,7 @@ the following table: &`id `& message id for incoming message &`P `& on &`<=`& lines: protocol used &` `& on &`=>`& and &`**`& lines: return path +&`PRX `& on &'<='& and&`=>`& lines: proxy address &`QT `& on &`=>`& lines: time spent on queue so far &` `& on &"Completed"& lines: time spent on queue &`R `& on &`<=`& lines: reference for local bounce @@ -38144,13 +38195,13 @@ is an IP address and any subsequent elements are options. Options are a string <name>=<value>. The list of options is in the following table: .display -&`auth `& authentication method -&`name `& authentication username -&`pass `& authentication password -&`port `& tcp port -&`tmo `& connection timeout -&`pri `& priority -&`weight `& selection bias +&'auth '& authentication method +&'name '& authentication username +&'pass '& authentication password +&'port '& tcp port +&'tmo '& connection timeout +&'pri '& priority +&'weight '& selection bias .endd More details on each of these options follows: @@ -38198,6 +38249,127 @@ This will add a component tagged with &"PRX="& to the line. . //////////////////////////////////////////////////////////////////////////// . //////////////////////////////////////////////////////////////////////////// +.chapter "Internationalisation" "CHAPi18n" &&& + "Internationalisation"" +.cindex internationalisation "email address" +.cindex EAI +.cindex i18n +.cindex UTF-8 "mail name handling" + +.new +Exim has support for Internationalised mail names. +To include this it must be built with SUPPORT_I18N and the libidn library. +Standards supported are RFCs 2060, 5890, 6530 and 6533. + +.section "MTA operations" SECTi18nMTA +.cindex SMTPUTF8 "ESMTP option" +The main configuration option &%smtputf8_advertise_hosts%& specifies +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%& +when Exim is built with SUPPORT_I18N. + +Both localparts and domain are maintained as the original +UTF-8 form internally; any comparison or regular-expression use will +require appropriate care. Filenames created, eg. by +the appendfile transport, will have UTF-8 names. + +Helo names sent by the smtp transport will have any UTF-8 +components expanded to a-label form, +and any certificate name checks will be done using the a-label +form of the name. + +.cindex log protocol +.cindex SMTPUTF8 logging +Log lines and Received-by: header lines will acquire a "utf8" +prefix on the protocol element, eg. utf8esmtp. + +The following expansion operator can be used: +.code +${utf8_domain_to_alabel:str} +${utf8_domain_from_alabel:str} +${utf8_localpart_to_alabel:str} +${utf8_localpart_from_alabel:str} +.endd + +ACLs may use the following modifier: +.display +control = utf8_downconvert +control = utf8_downconvert/<value> +.endd +This sets a flag requiring that addresses are converted to +a-label form before smtp delivery, for use in a +Message Submission Agent context. +If a value is appended it may be: +.display +&`1 `& (default) mandatory downconversion +&`0 `& no downconversion +&`-1 `& if SMTPUTF8 not supported by destination host +.endd + +If mua_wrapper is set, the utf8_downconvert control +is initially set to -1. + + +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. + +There is no support for DSN unitext handling, +and no provision for converting logging from or to UTF-8. + + + +.section "MDA operations" SECTi18nMDA +To aid in constructing names suitable for IMAP folders +the following expansion operator can be used: +.code +${imapfolder {<string>} {<sep>} {<specials>}} +.endd + +The string is converted from the charset specified by +the "headers charset" command (in a filter file) +or &%headers_charset%& main configuration option (otherwise), +to the +modified UTF-7 encoding specified by RFC 2060, +with the following exception: All occurences of <sep> +(which has to be a single character) +are replaced with periods ("."), and all periods and slashes that are not +<sep> and are not in the <specials> string are BASE64 encoded. + +The third argument can be omitted, defaulting to an empty string. +The second argument can be omitted, defaulting to "/". + +This is the encoding used by Courier for Maildir names on disk, and followed +by many other IMAP servers. + +Examples: +.display +&`${imapfolder {Foo/Bar}} `& yields &`Foo.Bar`& +&`${imapfolder {Foo/Bar}{.}{/}} `& yields &`Foo&&AC8-Bar`& +&`${imapfolder {Räksmörgås}} `& yields &`R&&AOQ-ksm&&APY-rg&&AOU-s`& +.endd + +Note that the source charset setting is vital, and also that characters +must be representable in UTF-16. + +.wen + +. //////////////////////////////////////////////////////////////////////////// +. //////////////////////////////////////////////////////////////////////////// + .chapter "Adding new drivers or lookup types" "CHID13" &&& "Adding drivers or lookups" .cindex "adding drivers" diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index c167f8392..eab4f6547 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -120,6 +120,9 @@ JH/26 Move PROXY support from Experimental to mainline, enabled for a build is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}. variables are renamed to proxy_{local,external}_{address,port}. +JH/27 Move Internationalisation support from Experimental to mainline, enabled + for a build by defining SUPPORT_I18N + Exim version 4.86 ----------------- diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt index 45e7d1ba1..aa4cb464d 100644 --- a/doc/doc-txt/experimental-spec.txt +++ b/doc/doc-txt/experimental-spec.txt @@ -1125,102 +1125,6 @@ $tls_out_tlsa_usage (detailed above). -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 |