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-rw-r--r--src/src/smtp_in.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/src/smtp_in.c b/src/src/smtp_in.c
index 476bbf0c2..23bc5315e 100644
--- a/src/src/smtp_in.c
+++ b/src/src/smtp_in.c
@@ -1396,6 +1396,7 @@ smtp_cmd_buffer = (uschar *)malloc(2*smtp_cmd_buffer_size + 2);
if (smtp_cmd_buffer == NULL)
log_write(0, LOG_MAIN|LOG_PANIC_DIE,
"malloc() failed for SMTP command buffer");
+smtp_cmd_buffer[0] = 0;
smtp_data_buffer = smtp_cmd_buffer + smtp_cmd_buffer_size + 1;
/* For batched input, the protocol setting can be overridden from the