3 - SpamAssassin / procmail support
4 - Additional AUTH methods
6 - Verify sender address (domain, corresponding authenticated user)
7 - Temporarily unavailable (Test mode?)
8 - Reason for disconnect
9 - Proper handling of "ReqHELO" and "Unknown command"
10 - Log outgoing SMTP transactions
11 - Show delivery thread IDs
12 - Watchdog for delivery threads
14 - Show authenticated user in "Received" headers
15 - Delivery threads should finish sooner
16 - Ensure random spool object names
23 - Option to disable MX lookups
24 - Separate config files or work directories supplied in parameters
25 - Process CTRL-C properly to quit from user mode gracefully
27 - Bind to user-specified IPs
28 + Option to add Reply-To header to forwarded e-mails
31 + Change "Client disconnected, and thread exited successfully." to "Client disconnected."
32 + Fix "Internal error" bug - this should be a temporary failure
33 + Fix bug regarding simultaneous delivery to forwarded mailboxes
34 + Fix bug in DNSMX.pas: improper handling of MX precedence values larger than 100
35 + Fix bug regarding Policies/Hosts table not being case-insensitive
36 + Fix service mode not working when compiled with FPC 2.6.2!
37 + Alternate mailbox names with + signs (e.g. "megabrutal+games@domain")
38 + Domain-scope mailbox settings
39 + Improved Wine compatibility
40 + Consistent handling of local/relay spool objects
41 + Implement Win64 support
43 + Enforce ASCII printable characters in commands
44 + Developer comment for test/debug builds
45 + More efficient command-line parsing
49 + Show Message-IDs upon receipt
50 + Send one cumulative DSN when multiple recipients fail
52 + Add timestamp correction to "Received" headers
53 + Append "Original-To" header
57 + Reject HEAD and POST requests too
58 + Domain-specific mailboxes (virtual hosting)
59 + Correct incorrect timezone correction
60 + Correct bug in address interpretation
61 + Correct bug in spool iteration
62 + Write thread IDs in spool objects
63 + Append "Return-Path" header
67 + Meaningful status codes (in smtp.log)
68 + Accept mixed-case commands
69 + Correct bug in DNS MX queries
71 + Log SMTP responses on permanent status changes
72 + Don't remember status codes (never needed, only causes confusion)
75 + Disconnect HTTP agents
77 + Accept awkward AUTH LOGIN attempts
79 + Fix memory/handle leak
87 + Hide AUTH feature when no users
88 + Add protection against loops
89 + Ensure case-insensitive relay routes
93 + Fully support SIZE parameter
94 + Better support for 8BITMIME