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-rw-r--r--src/src/dkim.c1
1 files changed, 1 insertions, 0 deletions
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;