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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙdivert(-1)changequote(<<, >>)<< ----------------------------------------------------------------------------- FEATURE(domainmap) Macro The existing virtusertable feature distributed with sendmail is a good basic approach to virtual hosting, but it is missing a few key features: 1. Ability to have a different map for each domain. 2. Ability to perform virtual hosting for domains which are not in $=w. 3. Ability to use a centralized network-accessible database (such as PH) which is keyed on username alone (as opposed to the fully-qualified email address). The FEATURE(domainmap) macro neatly solves these problems. The basic syntax of the macro is: FEATURE(domainmap, `domain.com', `map definition ...')dnl To illustrate how it works, here is an example: FEATURE(domainmap, `foo.com', `dbm -o /etc/mail/foo-users')dnl In this example, mail sent to user@foo.com will be rewritten by the domainmap. The username will be looked up in the DBM map /etc/mail/foo-users, which looks like this: jsmith johnsmith@mailbox.foo.com jdoe janedoe@sandbox.bar.com So mail sent to jsmith@foo.com will be relayed to johnsmith@mailbox.foo.com, and mail sent to jdoe@foo.com will be relayed to janedoe@sandbox.bar.com. The FEATURE(domainmap) Macro supports the user+detail syntax by stripping off the +detail portion before the domainmap lookup and tacking it back on to the result. Using the example above, mail sent to jsmith+sometext@foo.com will be rewritten as johnsmith+sometext@mailbox.foo.com. If one of the elements in the $=w class (i.e., "local" delivery hosts) is a domain specified in a FEATURE(domainmap) entry, you need to use the LOCAL_USER(username) macro to specify the list of users for whom domainmap lookups should not be done. To use this macro, simply copy this file into the cf/feature directory in the sendmail source tree. For more information, please see the following URL: http://www-dev.cites.uiuc.edu/sendmail/domainmap/ Feedback is welcome. Mark D. Roth ----------------------------------------------------------------------------- >>changequote(`, ')undivert(-1)divert ifdef(`_DOMAIN_MAP_',`',`dnl LOCAL_RULE_0 # do mapping for domains where applicable R$* $=O $* <@ $={MappedDomain} .> $@ $>Recurse $1 $2 $3 Strip extraneous routing R$+ <@ $={MappedDomain} .> $>DomainMapLookup $1 <@ $2 .> domain mapping LOCAL_RULESETS ########################################################################### ### Ruleset DomainMapLookup -- special rewriting for mapped domains ### ########################################################################### SDomainMapLookup R $=L <@ $=w .> $@ $1 <@ $2 .> weed out local users, in case # Cw contains a mapped domain R $+ <@ $+> $: $1 <@ $2 > <$&{addr_type}> check if sender R $+ <@ $+> $#smtp $@ $2 $: $1 @ $2 do not process sender ifdef(`DOMAINMAP_NO_REGEX',`dnl R $+ <@ $+> <$*> $: $1 <@ $2> <$2> find domain R $+ <$+> <$+ . $+> $1 <$2> < $(dequote $3 "_" $4 $) > # change "." to "_" R $+ <$+> <$+ .> $: $1 <$2> < $(dequote "domain_" $3 $) > # prepend "domain_" dnl',`dnl R $+ <@ $+> <$*> $: $1 <@ $2> <$2 :NOTDONE:> find domain R $+ <$+> <$+ . :NOTDONE:> $1 <$2> < $(domainmap_regex $3 $: $3 $) > # change "." and "-" to "_" R $+ <$+> <$+> $: $1 <$2> < $(dequote "domain_" $3 $) > # prepend "domain_" dnl') R $+ <$+> <$+> $: $1 <$2> <$3> $1 find user name R $+ <$+> <$+> $+ + $* $: $1 <$2> <$3> $4 handle user+detail syntax R $+ <$+> <$+> $+ $: $1 <$2> $( $3 $4 $: $) # do actual domain map lookup R $+ <$+> $#error $@ 5.1.1 $: "550 email address lookup in domain map failed" R $+ <@ $+> $* $* $#dsmtp $@ localhost $: $1 @ $2 # queue it up for later delivery R $+ + $* <$+> $+ @ $+ $: $1 + $2 <$3> $4 + $2 @ $5 # reset original user+detail R $+ <$+> $+ $@ $>Recurse $3 recanonify ifdef(`DOMAINMAP_NO_REGEX',`',`dnl LOCAL_CONFIG K domainmap_regex regex -a.:NOTDONE: -s1,2 -d_ (.*)[-\.]([^-\.]*)$ ')define(`_DOMAIN_MAP_',`1')') LOCAL_CONFIG C{MappedDomain} _ARG_ K `domain_'translit(_ARG_, `.-', `__') _ARG2_ -T