Take a look at ConfigServer CMQ (ConfigServer Mail Queues). You should be able to filter on a header with the IP to remove them from the queue. I'm sure it can be done command like with the proper exigrep command, but the GUI just makes general queue maintenance easier.
Take a look at ConfigServer CMQ (ConfigServer Mail Queues). You should be able to filter on a header with the IP to remove them from the queue. I'm sure it can be done command like with the proper exigrep command, but the GUI just makes general queue maintenance easier.