tx Ali Erturk TURKER
https://notes.sagredo.eu/qmail-notes-185/testing-esmtp-size-patch-for-qmail-139.html#comment2940

diff -ruN netqmail-1.06-sagredo-org/qmail-smtpd.c netqmail-1.06-sagredo/qmail-smtpd.c
--- netqmail-1.06-sagredo-org/qmail-smtpd.c	2023-03-18 20:21:39.713287500 +0400
+++ netqmail-1.06-sagredo/qmail-smtpd.c	2023-03-18 20:30:23.013991900 +0400
@@ -917,40 +917,6 @@
 }
 /* rbl: end */
 
-int sizelimit(arg)
-char *arg;
-{
-  int i;
-  long r;
-  unsigned long sizebytes = 0;
-
-  i = str_chr(arg,'<');
-  if (arg[i])
-    arg += i + 1;
-  else {
-    arg += str_chr(arg,':');
-    if (*arg == ':') ++arg;
-    while (*arg == ' ') ++arg;
-  }
-
-  arg += str_chr(arg,' ');
-  if (*arg == ' ') while (*arg == ' ') ++arg;
-  else return 1;
-
-  i = str_chr(arg,'=');
-  arg[i] = 0;
-  if (case_equals(arg,"SIZE")) {
-    arg += i;
-    while (*++arg && *arg > 47 && *arg < 58) {
-      sizebytes *= 10;
-      sizebytes += *arg - 48;
-    }
-    r = databytes - sizebytes;
-    if (r < 0) return 0;
-  }
-  return 1;
-}
-
 int addrallowed()
 {
   int r;
@@ -1195,13 +1161,6 @@
   if (bhelook) flagbarfbhelo = bmcheck(BMCHECK_BHELO);
   if ((!flagbarfbhelo) && (bhelonrok) && (!relayclient)) flagbarfbhelo = bmcheck(BMCHECK_BHELONR);
 }
-char size_buf[FMT_ULONG];
-void smtp_size()
-{
-  size_buf[fmt_ulong(size_buf,(unsigned long) databytes)] = 0;
-  out("250 SIZE "); out(size_buf); out("\r\n");
-}
-
 /* ESMTP extensions are published here */
 void smtp_ehlo(arg) char *arg;
 {
@@ -1227,7 +1186,7 @@
 #ifdef TLS
   }
 #endif
-  smtp_size();
+  out("250 SIZE "); out(size); out("\r\n");
   seenmail = 0; dohelo(arg);
   if (bhelook) flagbarfbhelo = bmcheck(BMCHECK_BHELO);
   if ((!flagbarfbhelo) && (bhelonrok) && (!relayclient)) flagbarfbhelo = bmcheck(BMCHECK_BHELONR);
@@ -1252,7 +1211,6 @@
   if (smtpauth)
     if (smtpauth > 10 && !seenauth) { err_submission(); return; }
   if (!addrparse(arg)) { err_syntax(); return; }
-  if (databytes && !sizelimit(arg)) { err_size(); return; }
 /* start chkuser code */
   switch (chkuser_sender (&addr)) {
     case CHKUSER_OK: