diff --git a/data/Dockerfiles/postfix/postfix.sh b/data/Dockerfiles/postfix/postfix.sh
index 3b18de40..514fbccb 100755
--- a/data/Dockerfiles/postfix/postfix.sh
+++ b/data/Dockerfiles/postfix/postfix.sh
@@ -25,17 +25,21 @@ EOF
 newaliases;
 
 # create sni configuration
-echo -n "" > /opt/postfix/conf/sni.map;
-for cert_dir in /etc/ssl/mail/*/ ; do
-  if [[ ! -f ${cert_dir}domains ]] || [[ ! -f ${cert_dir}cert.pem ]] || [[ ! -f ${cert_dir}key.pem ]]; then
-    continue;
-  fi
-  IFS=" " read -r -a domains <<< "$(cat "${cert_dir}domains")"
-  for domain in "${domains[@]}"; do
-    echo -n "${domain} ${cert_dir}key.pem ${cert_dir}cert.pem" >> /opt/postfix/conf/sni.map;
-    echo "" >> /opt/postfix/conf/sni.map;
+if [[ "${SKIP_LETS_ENCRYPT}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+  echo -n "" > /opt/postfix/conf/sni.map
+else
+  echo -n "" > /opt/postfix/conf/sni.map;
+  for cert_dir in /etc/ssl/mail/*/ ; do
+    if [[ ! -f ${cert_dir}domains ]] || [[ ! -f ${cert_dir}cert.pem ]] || [[ ! -f ${cert_dir}key.pem ]]; then
+      continue;
+    fi
+    IFS=" " read -r -a domains <<< "$(cat "${cert_dir}domains")"
+    for domain in "${domains[@]}"; do
+      echo -n "${domain} ${cert_dir}key.pem ${cert_dir}cert.pem" >> /opt/postfix/conf/sni.map;
+      echo "" >> /opt/postfix/conf/sni.map;
+    done
   done
-done
+fi
 postmap -F hash:/opt/postfix/conf/sni.map;
 
 cat <<EOF > /opt/postfix/conf/sql/mysql_relay_ne.cf
diff --git a/docker-compose.yml b/docker-compose.yml
index 4733b820..017d925a 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -255,7 +255,7 @@ services:
             - dovecot
 
     postfix-mailcow:
-      image: mailcow/postfix:1.58
+      image: mailcow/postfix:1.59
       depends_on:
         - mysql-mailcow
       volumes: