sauf que c'est viré dans le package:
--- maildrop-2.0.2.orig/debian/patches/004-maildrop-permanent-err.patch
+++ maildrop-2.0.2/debian/patches/004-maildrop-permanent-err.patch
@@ -0,0 +1,15 @@
+diff --git a/maildrop/deliver.C b/maildrop/deliver.C
+--- a/maildrop/deliver.C
++++ b/maildrop/deliver.C
+@@ -153,11 +153,7 @@ Buffer b;
+ if ( deliver_maildir.MaildirOpen(mailbox, deliver_file,
+ maildrop.msgptr->MessageSize()) < 0)
+ {
+-#if HAVE_COURIER
+ throw 75;
+-#else
+- throw 77;
+-#endif
+ }
+
+ format_mbox.Init(0);