X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/7ab90dd415eac327c57c5ba755b2005a8c0b946f..fe12ec888ef7b81ee0f5874ca6201ba11b0e9b19:/src/src/dkim.c?ds=sidebyside

diff --git a/src/src/dkim.c b/src/src/dkim.c
index a0becd45b..96d7eba81 100644
--- a/src/src/dkim.c
+++ b/src/src/dkim.c
@@ -620,6 +620,7 @@ if (dkim_domain)
   /* Only sign once for each domain, no matter how often it
   appears in the expanded list. */
 
+  dkim_signing_domain = string_copylc(dkim_signing_domain);
   if (match_isinlist(dkim_signing_domain, CUSS &seen_doms,
       0, NULL, NULL, MCL_STRING, TRUE, NULL) == OK)
     continue;