diff -ruN libdomainkeys-0.69-original/domainkeys.c libdomainkeys-0.69/domainkeys.c
--- libdomainkeys-0.69-original/domainkeys.c	2008-04-01 00:50:39.000000000 +0200
+++ libdomainkeys-0.69/domainkeys.c	2019-02-13 23:20:40.272195961 +0100
@@ -120,7 +120,11 @@
 {
 /* STARTPRIV */
   int dkmarker;     /* in case somebody casts in */
-  EVP_MD_CTX mdctx;   /* the hash */
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L) || defined (LIBRESSL_VERSION_NUMBER)
+  EVP_MD_CTX mdctx; /* the hash */
+#else
+  EVP_MD_CTX *mdctx; /* the hash */
+#endif
   int signing;      /* our current signing/verifying state */
   int in_headers;   /* true if we're still processing headers */
   char *header;     /* points to a malloc'ed block for header. */
@@ -2152,7 +2156,11 @@
 #ifdef DK_HASH_BUFF
   DK_MFREE(dk->hash_buff);
 #endif
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L) || defined (LIBRESSL_VERSION_NUMBER)
   EVP_MD_CTX_cleanup(&dk->mdctx);
+#else
+  EVP_MD_CTX_free(&dk->mdctx);
+#endif
   DK_MFREE(dk->header);   /* alloc'ing dk->header is not optional. */
   dk->dkmarker = ~DKMARK;
   DK_MFREE(dk);