[FIX] ir_mail_server, mail: catch SMTPServerDisconnected exceptions

If the smtp session was dead, it would lead the whole mail batch to fail.

opw 1949270

closes odoo/odoo#32424

Signed-off-by: Olivier Dony (odo) <odo@openerp.com>

addons/mail/models/mail_mail.py

@@ -5,6 +5,7 @@ import base64
 import datetime
 import logging
 import psycopg2
+import smtplib
 import threading
 import re
 
@@ -394,11 +395,12 @@ class MailMail(models.Model):
                     mail.id, mail.message_id)
                 # mail status will stay on ongoing since transaction will be rollback
                 raise
-            except psycopg2.Error:
-                # If an error with the database occurs, chances are that the cursor is unusable.
-                # This will lead to an `psycopg2.InternalError` being raised when trying to write
-                # `state`, shadowing the original exception and forbid a retry on concurrent
-                # update. Let's bubble it.
+            except (psycopg2.Error, smtplib.SMTPServerDisconnected):
+                # If an error with the database or SMTP session occurs, chances are that the cursor
+                # or SMTP session are unusable, causing further errors when trying to save the state.
+                _logger.exception(
+                    'Exception while processing mail with ID %r and Msg-Id %r.',
+                    mail.id, mail.message_id)
                 raise
             except Exception as e:
                 failure_reason = tools.ustr(e)

odoo/addons/base/models/ir_mail_server.py

@@ -482,6 +482,8 @@ class IrMailServer(models.Model):
             # do not quit() a pre-established smtp_session
             if not smtp_session:
                 smtp.quit()
+        except smtplib.SMTPServerDisconnected:
+            raise
         except Exception as e:
             params = (ustr(smtp_server), e.__class__.__name__, ustr(e))
             msg = _("Mail delivery failed via SMTP server '%s'.\n%s: %s") % params