Re: sender rewrining advice

  - https://web.archive.org/web/20051221183047/http://srs-socketmap.info/sendmailsrs.htm

this from the webarchive, was always executing the srs rewriting not?
SEnvFromSMTP
R$+                     $: $>PseudoToReal $1    sender/recipient common
R$* :; <@>              $@                      list:; special case
R$*                     $: $>MasqSMTP $1        qualify unqual'ed names
R$+                     $: $>MasqEnv $1         do masquerading
R$*                     $: $(make_srs $1 $)

The collection of files is basically two versions of very similar solutions.  I've used both.
 I'm currently using the perlsrs-old.m4.
     HACK(`perlsrs-old')dnl
 

 It looks like line 37 of the perlsrs-old.m4 is what references the class w map (where local-host-names gets loaded into).  So I would think that you could create a new class and load contents of a different file into the class and for reference.
 

:) I am not really experienced with m4 nor sendmail. Could that be something like modifying this?
define(`confCW_FILE', `@LDAP')dnl
FEATURE(use_cw_file, `LDAP')dnl
Would it not be an easy sendmail hack to only allow messages going out that have an envelope domain that matches a domain in this map?