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
30 + Change "Client disconnected, and thread exited successfully." to "Client disconnected."
31 + Fix "Internal error" bug - this should be a temporary failure
32 + Fix bug regarding simultaneous delivery to forwarded mailboxes
33 + Fix bug in DNSMX.pas: improper handling of MX precedence values larger than 100
34 + Fix bug regarding Policies/Hosts table not being case-insensitive
35 + Fix service mode not working when compiled with FPC 2.6.2!
36 + Alternate mailbox names with + signs (e.g. "megabrutal+games@domain")
37 + Domain-scope mailbox settings
38 + Improved Wine compatibility
39 + Consistent handling of local/relay spool objects
40 + Implement Win64 support
42 + Enforce ASCII printable characters in commands
43 + Developer comment for test/debug builds
44 - More efficient command-line parsing
48 + Show Message-IDs upon receipt
49 + Send one cumulative DSN when multiple recipients fail
51 + Add timestamp correction to "Received" headers
52 + Append "Original-To" header
56 + Reject HEAD and POST requests too
57 + Domain-specific mailboxes (virtual hosting)
58 + Correct incorrect timezone correction
59 + Correct bug in address interpretation
60 + Correct bug in spool iteration
61 + Write thread IDs in spool objects
62 + Append "Return-Path" header
66 + Meaningful status codes (in smtp.log)
67 + Accept mixed-case commands
68 + Correct bug in DNS MX queries
70 + Log SMTP responses on permanent status changes
71 + Don't remember status codes (never needed, only causes confusion)
74 + Disconnect HTTP agents
76 + Accept awkward AUTH LOGIN attempts
78 + Fix memory/handle leak
86 + Hide AUTH feature when no users
87 + Add protection against loops
88 + Ensure case-insensitive relay routes
92 + Fully support SIZE parameter
93 + Better support for 8BITMIME