Email Stuck in Queue

[utkonos]

I am encountering a Gmail email address recipient which has the following error:
452-4.2.2 The email account that you tried to reach is over quota

The email is now in the queue being retried periodically. It has now been more than a day. What is the final timeout when a bounce message is sent back to the sender? Alternatively, is there a way to force it to send the bounce message and clear the queue?

 

[Stoiko Ivanov]

The email is now in the queue being retried periodically. It has now been more than a day. What is the final timeout when a bounce message is sent back to the sender? Alternatively, is there a way to force it to send the bounce message and clear the queue?

for temporary errors (4xx - like 452) mails are put in the deferred queue and retried up to the queue_lifetime configured (5 days in the default setup)
in the default setup the user will get notification mails, that the mail is not delivered, but delivery is still attempted

This is actually quite sensible, as the recipient might get around to clean their mailbox and then have enough space for your mail.

I hope this helps!