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I installed the iRedMail (Postfix, Dovecot, ....) and create Mailboxes for Users. But I hanged in the Deletion Request.
I want to prevent vUsers (that have MAilboxes) from deleting the eMails (Business Request).
Some Searches said to make ACL on the Maildir, bit I think that this solution will make problems in the Service User during the Deletion.
So I think that the solution may come from another way, from the IPtables, I want to block the POP3 DELE Request before entering the Server. I tried but failed.
Any Help in that (in IPtables Configurations or another Solution)... Thanks.
I believe that the IPtables can match on a string found in the Packet Payload, I blocked before the Torrent Traffic by IPtables String options, without assigning any blocked Port Number. – Mohamed Badr – 2015-09-03T12:58:33.070
But I am interested in doing the "Lazy expunge", so I will search and return to you back ISA... Thanks. – Mohamed Badr – 2015-09-03T13:00:56.290
Yes, what I mean is that the whole command won't be sent in the same packet necessarily. For example, the command might be sent as
POP3 D
at the end of a TCP packet and the rest of the packet be splitted into another with contentELE
, which wouldn't match your rule. Anyways, the plugin approach is quite cleaner to me than the iptables way. – nKn – 2015-09-03T13:01:15.177Thanks Sir, but if you found the POP3 DELE Payload Format, kindly add comment. – Mohamed Badr – 2015-09-03T13:07:09.747