diff --git a/getssl b/getssl
index 72d3f36..41663da 100755
--- a/getssl
+++ b/getssl
@@ -438,29 +438,29 @@ check_config() { # check the config files for all obvious errors
       fi
       # check domain exists
       if [[ "$DNS_CHECK_FUNC" == "drill" ]]; then
-        if [[ "$($DNS_CHECK_FUNC "${d}" |grep -c "${d}")" -ge 1 ]]; then
+        if [[ "$($DNS_CHECK_FUNC "${d}" |grep -c -i "${d}")" -ge 1 ]]; then
           debug "found IP for ${d}"
         else
           info "${DOMAIN}: DNS lookup failed for ${d}"
           config_errors=true
         fi
       elif [[ "$DNS_CHECK_FUNC" == "dig" ]]; then
-        if [[ "$($DNS_CHECK_FUNC "${d}" -t SOA|grep -c "^${d}")" -ge 1 ]]; then
+        if [[ "$($DNS_CHECK_FUNC "${d}" -t SOA|grep -c -i "^${d}")" -ge 1 ]]; then
           debug "found SOA IP for ${d}"
-        elif [[ "$($DNS_CHECK_FUNC "${d}" -t A|grep -c "^${d}")" -ge 1 ]]; then
+        elif [[ "$($DNS_CHECK_FUNC "${d}" -t A|grep -c -i "^${d}")" -ge 1 ]]; then
           debug "found A IP for ${d}"
         else
           info "${DOMAIN}: DNS lookup failed for ${d}"
           config_errors=true
         fi
       elif [[ "$DNS_CHECK_FUNC" == "host" ]]; then
-        if [[ "$($DNS_CHECK_FUNC "${d}" |grep -c "^${d}")" -ge 1 ]]; then
+        if [[ "$($DNS_CHECK_FUNC "${d}" |grep -c -i "^${d}")" -ge 1 ]]; then
           debug "found IP for ${d}"
         else
           info "${DOMAIN}: DNS lookup failed for ${d}"
           config_errors=true
         fi
-      elif [[ "$(nslookup -query=AAAA "${d}"|grep -c "^${d}.*has AAAA address")" -ge 1 ]]; then
+      elif [[ "$(nslookup -query=AAAA "${d}"|grep -c -i "^${d}.*has AAAA address")" -ge 1 ]]; then
         debug "found IPv6 record for ${d}"
       elif [[ "$(nslookup "${d}"| grep -c ^Name)" -ge 1 ]]; then
         debug "found IPv4 record for ${d}"