smtp: Fixed an issue when processing EHLO failure responses (Part 2)

Follow up fix to commit 23d17190ee32 as EHLO capabilities can exist
within a positive response line.

1 files changed, 4 insertions, 5 deletions

diff --git a/lib/smtp.c b/lib/smtp.c
index fac03c94a..fd8d71226 100644
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -213,19 +213,18 @@ static int smtp_endofresp(struct pingpong *pp, int *resp)
   size_t len = strlen(pp->linestart_resp);
   struct connectdata *conn = pp->conn;
   struct smtp_conn *smtpc = &conn->proto.smtpc;
+  int result = FALSE;
   size_t wordlen;
 
   if(len < 4 || !ISDIGIT(line[0]) || !ISDIGIT(line[1]) || !ISDIGIT(line[2]))
     return FALSE;       /* Nothing for us */
 
   /* Do we have a command response? */
-  if(line[3] == ' ') {
+  if((result = (line[3] == ' ')) != 0)
     *resp = curlx_sltosi(strtol(line, NULL, 10));
-    return TRUE;
-  }
 
   /* Are we processing EHLO command data? */
-  if(smtpc->state == SMTP_EHLO) {
+  if(smtpc->state == SMTP_EHLO && (!result || (result && *resp == 250))) {
     line += 4;
     len -= 4;
 
@@ -281,7 +280,7 @@ static int smtp_endofresp(struct pingpong *pp, int *resp)
     }
   }
 
-  return FALSE;
+  return result;
 }
 
 /* This is the ONLY way to change SMTP state! */