Experimental: ESMTP LIMITS extension

[exim.git] / src / src / smtp_in.c

diff --git a/src/src/smtp_in.c b/src/src/smtp_in.c
index 2bb15b6985ab28e5b5c8208456c1a06bb0e06fec..d60e7d5c5eec87acf701fa8e3809056c616bcc97 100644 (file)
--- a/src/src/smtp_in.c
+++ b/src/src/smtp_in.c
@@ -4346,6 +4346,19 @@ while (done <= 0)
          g = string_catn(g, US"-SIZE\r\n", 7);
          }
 
+#ifdef EXPERIMENTAL_ESMTP_LIMITS
+       if (  (mailmax > 0 || recipients_max)
+          && verify_check_host(&limits_advertise_hosts) == OK)
+         {
+         g = string_fmt_append(g, "%.3s-LIMITS", smtp_code);
+         if (mailmax > 0)
+           g = string_fmt_append(g, " MAILMAX=%d", mailmax);
+         if (recipients_max)
+           g = string_fmt_append(g, " RCPTMAX=%d", recipients_max);
+         g = string_catn(g, US"\r\n", 2);
+         }
+#endif
+
        /* Exim does not do protocol conversion or data conversion. It is 8-bit
        clean; if it has an 8-bit character in its hand, it just sends it. It
        cannot therefore specify 8BITMIME and remain consistent with the RFCs.