Update smtp.py (#21335)

2025-06-25 13:50:35 +08:00
parent 0f5417ab84
commit a098825fcc
1 changed files with 4 additions and 0 deletions
--- a/api/libs/smtp.py
+++ b/api/libs/smtp.py
@@ -22,7 +22,11 @@ class SMTPClient:
            if self.use_tls:
                if self.opportunistic_tls:
                    smtp = smtplib.SMTP(self.server, self.port, timeout=10)
+                    # Send EHLO command with the HELO domain name as the server address
+                    smtp.ehlo(self.server)
                    smtp.starttls()
+                    # Resend EHLO command to identify the TLS session
+                    smtp.ehlo(self.server)
                else:
                    smtp = smtplib.SMTP_SSL(self.server, self.port, timeout=10)
            else: