Dear Sir , I had got the problem on receive delay email.
Today , i check my postfix mailq , there are 150mail queue.
The holding email receiver is the same user call " user1 "
Another mail sent to user2 , user3 is normal.
I don't why the mail can't sent into "user1" , I already check user1 quota is not exceed.
I also restart my postfix. ,Requeue the mail , BUt the mail still here?
Any body can help me ?