X-Git-Url: http://gitweb.michael.orlitzky.com/?p=haeredes.git;a=blobdiff_plain;f=haeredes.cabal;h=1bef536699c8b30c8faba568b02591672b547e85;hp=2463a59d73d5f102af37d5baa392b1ac694dbff4;hb=a875f42960e8ee6b9d9b6aa0666caa49afd96a2e;hpb=228abb512bcd019b98d2b3fd7b7283f5ef14d1bc

diff --git a/haeredes.cabal b/haeredes.cabal
index 2463a59..1bef536 100644
--- a/haeredes.cabal
+++ b/haeredes.cabal
@@ -8,9 +8,63 @@ license-file:   doc/LICENSE
 homepage:       http://michael.orlitzky.com/code/haeredes.php
 bug-reports:    mailto:michael@orlitzky.com
 category:       DNS, Utils
+build-type:     Simple
+extra-source-files:
+  doc/man1/haeredes.1
 synopsis:
   Confirm delegation of NS and MX records.
-build-type:     Simple
+description:
+  Haeredes is primarily useful for ISP network administrators.
+  Customers will occasionally decide to switch hosts without alerting
+  the current host; this can cause two problems:
+  .
+    * With NS records, the previous host (at the very least) keeps
+      hosting a DNS zone that does nothing. If that host uses their
+      authoritative nameserver as a caching lookup server as well, it
+      may return incorrect results to queries about the domain in
+      question.
+  .
+    * For MX records, the situation is slightly worse. Most mail servers
+      will immediately accept mail for which the server thinks it is the
+      ultimate destination. If a mail server is configured as the
+      destination for a domain, but it is not the MX for that domain,
+      then mail submitted to that server may possibly be lost. It is
+      therefore important to remove domains from the old mail host as
+      soon as the MX record is changed.
+  .
+  Haeredes can alert administrators when NS/MX records are changed.
+  .
+  /Examples/:
+  .
+  Make sure example.com has the expected name servers,
+  [ab].iana-servers.net:
+  .
+  @
+  $ haeredes a.iana-servers.net b.iana-servers.net <<< \"example.com\"
+  @
+  .
+  Check orlitzky.com against the expected name servers, using
+  d.gtld-servers.net:
+  .
+  @
+  $ haeredes --server 199.7.91.13 dns1.viabit.com dns2.viabit.com \
+  &#x20;          <<< \"orlitzky.com\"
+  @
+  .
+  Check orlitzky.com against only one of the expected two nameservers:
+  .
+  @
+  $ haeredes dns1.viabit.com <<< \"orlitzky.com\"
+  Domain \"orlitzky.com.\" delegates somewhere else: \"dns2.viabit.com.\"
+  @
+  .
+  Check a nonexistent domain (we provide no delegates, since we
+  know .invalid will not be delegated):
+  .
+  @
+  $ haeredes <<< \"example.invalid\"
+  Domain \"example.invalid.\" not delegated.
+  @
 
 executable haeredes
   build-depends:
@@ -27,6 +81,10 @@ executable haeredes
   hs-source-dirs:
     src/
 
+  other-modules:
+    CommandLine
+    DNS
+
   ghc-options:
     -Wall
     -fwarn-hi-shadowing