X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=src%2Fsrc%2Fverify.c;h=a702e92d6d0506dfadc2b9c180f866e91f1f226a;hb=754a0503134b184183f64c04ed30a3524fc3860b;hp=1ead3021671dbfe649158351e19c2143b15f2358;hpb=e6d225ae6e6811d3c88dc201642a2127ff6c11bd;p=exim.git

diff --git a/src/src/verify.c b/src/src/verify.c
index 1ead30216..a702e92d6 100644
--- a/src/src/verify.c
+++ b/src/src/verify.c
@@ -885,7 +885,7 @@ Returns:
 */
 
 static void PRINTF_FUNCTION(2,3)
-respond_printf(FILE *f, char *format, ...)
+respond_printf(FILE *f, const char *format, ...)
 {
 va_list ap;
 
@@ -3038,7 +3038,7 @@ while ((domain = string_nextinlist(&list, &sep, buffer, sizeof(buffer))) != NULL
 
   for (s = domain; *s != 0; s++)
     {
-    if (!isalnum(*s) && *s != '-' && *s != '.')
+    if (!isalnum(*s) && *s != '-' && *s != '.' && *s != '_')
       {
       log_write(0, LOG_MAIN, "dnslists domain \"%s\" contains "
         "strange characters - is this right?", domain);
@@ -3050,7 +3050,7 @@ while ((domain = string_nextinlist(&list, &sep, buffer, sizeof(buffer))) != NULL
 
   if (domain_txt != domain) for (s = domain_txt; *s != 0; s++)
     {
-    if (!isalnum(*s) && *s != '-' && *s != '.')
+    if (!isalnum(*s) && *s != '-' && *s != '.' && *s != '_')
       {
       log_write(0, LOG_MAIN, "dnslists domain \"%s\" contains "
         "strange characters - is this right?", domain_txt);