When using single layer SMTP multiplexing as discussed in section 3, it makes sense to use the same topology for mail retrieval multiplexing. In this case, the real POP3 and IMAP4 daemons will need to be run on a port other than 110 and 143 respectively as perdition will listen on these ports. If the real server is run on port 7777, then a sample pop map would be as follows;
This has the unfortunate side affect, that a TCP/IP connection will have to be set up between perdition and the real pop server even if they are running on the same host. The traffic analysis, for this setup is the same as for single layer SMTP multiplexing as discussed in section 3.3.