I fixed the issue you mentioned above. Now it seems all the stuck mails had went to the deferred queue, and the active queue is clear again. This is interesting. I checked some mail in the deferred queue. Most of them seems to be "Undelivered Mail Returned to Sender". It seems someones sent mails to our no-reply mailbox. And this mailbox itself doesn't exist. So our server generate a bounce mail, while this mail is denied by the their mail servers. They stuck in the active queue. Could be some kind of attack?

On 2011/5/23 21:56, Bastian Blank wrote:
On Mon, May 23, 2011 at 09:26:09PM +0800, 张耀星 wrote:

Please don't top-post.

Am 23.05.2011 14:39, schrieb yaoxing:
May 23 07:27:36 gw1 postfix/local[7700]: fatal: main.cf configuration error: 
mailbox_size_limit is smaller than
message_size_limit
                      And I haven't change anything for a long time.
What do u think?
Someone or something changed the config. Postfix never allowed this.

Bastian

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