Fix missing mailboxes

remove_duplicate_imap_messages/remove_duplicate_imap_messages.py

@@ -53,9 +53,43 @@ class RemoveDuplicateImapMessages:
 
     def _process_mailbox(self, mailbox):
         '''Process a mailbox'''
-        self.imap.select(mailbox=mailbox, readonly=False)
+        select_result = self.imap.select(mailbox=mailbox, readonly=False)
+        if select_result[0] == 'NO':
+            self._log.error(
+                "Error selecting mailbox '%s'. %s",
+                mailbox,
+                select_result
+            )
+            return False
         self._log.debug("Searching for all messages in mailbox '%s'...", mailbox)
+        try:
             typ, data = self.imap.search('UTF-8', 'ALL')
+        except imaplib.IMAP4.error as error:
+            if 'command SEARCH illegal in state AUTH' in f"{error}":
+                self._log.debug(
+                    'Error searching (wrong state AUTH), trying to re-connect and re-select the mailbox...'
+                )
+                self.connect_imap()
+                result = self.imap.select(mailbox=mailbox, readonly=False)
+                self._log.debug(
+                    "Result of select mailbox '%s': %s",
+                    mailbox,
+                    result
+                )
+                self._log.debug("Searching for all messages in mailbox '%s'...", mailbox)
+                try:
+                    typ, data = self.imap.search('UTF-8', 'ALL')
+                except imaplib.IMAP4.error as sub_error:
+                    self._log.error(
+                        "Error searching for message. Tried to re-connect without success. %s",
+                        sub_error
+                    )
+                    sys.exit(3)
+            self._log.error(
+                "Error searching for messages. %s",
+                error
+            )
+            sys.exit(2)
         self._log.debug('Response: %s', typ)
         if typ != 'OK':
             self._log.error('Error, server replied: %s', data)