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--- reference:imap4_server_script [2018/11/14 10:45] – external edit 127.0.0.1
+++ reference:imap4_server_script [2026/05/26 17:46] (current) – [GetEncryption function] paul
@@ Line 50: / Line 50: @@
     return true, attributes, extended
   end
+====GetEncryption function====
+(Added in version 8.7)
+When a connection is established, this lets the script define the encryption mode for this connection
+  GetEncryption(ipaddr, server addr, server port, default encryption mode)
+  * ipaddr - client IP address
+  * server addr - server IP address (eg if different IP addresses have bindings)
+  * server port - server port (eg if different ports have bindings)
+  * default encryption mode - 0 = no encryption/STARTTLS, 1 = SSL/TLS, 3 = Force STARTTLS
+returns a single number of the new encryption mode
+e.g. This will set SSL/TLS for connections to port 993 (bind the service to both ports 143 and 993, and set the encryption mode for None/STARTTLS or STARTTLS, which will still apply to connections to port 143)
+  function GetEncryption(client, svr, svrport, enc)
+    if (svrport==993) then
+        enc = 1;
+    end
+    return enc;
+  end
+====FilterCommand function====
+(Added in v9.1)
+Every time an IMAP4 command is received by VPOP3, this function is called, which will allow VPOP3 to filter it out, or replace it with trivial functionality
+  function FilterCommand(username, selectedMailbox, inputLine, command, parameters, tag, sessionState)
+returns newCommand, newParameters, returnText
+If 'newCommand' = 'X-VPOP3-Filtered', then VPOP3 won't run any command, but will send back 'returnText' instead.

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