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 - Bind to user-specified IPs
16 - Show authenticated user in "Received" headers
17 - Delivery threads should finish sooner
22 - Option to disable MX lookups
23 - Ensure random spool object names
24 - Process CTRL-C properly to quit from user mode gracefully
27 + Change "Client disconnected, and thread exited successfully." to "Client disconnected."
28 + Fix "Internal error" bug - this should be a temporary failure
29 + Fix bug regarding simultaneous delivery to forwarded mailboxes
30 + Fix bug in DNSMX.pas: improper handling of MX precedence values larger than 100
31 + Fix bug regarding Policies/Hosts table not being case-insensitive
32 + Fix service mode not working when compiled with FPC 2.6.2!
33 + Alternate mailbox names with + signs (e.g. "megabrutal+games@domain")
34 + Domain-scope mailbox settings
35 - Separate config files or work directories supplied in parameters
36 + Improved Wine compatibility
37 + Consistent handling of local/relay spool objects
38 + Implement Win64 support
40 + Enforce ASCII printable characters in commands
41 + Developer comment for test/debug builds
45 + Show Message-IDs upon receipt
46 + Send one cumulative DSN when multiple recipients fail
48 + Add timestamp correction to "Received" headers
49 + Append "Original-To" header
53 + Reject HEAD and POST requests too
54 + Domain-specific mailboxes (virtual hosting)
55 + Correct incorrect timezone correction
56 + Correct bug in address interpretation
57 + Correct bug in spool iteration
58 + Write thread IDs in spool objects
59 + Append "Return-Path" header
63 + Meaningful status codes (in smtp.log)
64 + Accept mixed-case commands
65 + Correct bug in DNS MX queries
67 + Log SMTP responses on permanent status changes
68 + Don't remember status codes (never needed, only causes confusion)
71 + Disconnect HTTP agents
73 + Accept awkward AUTH LOGIN attempts
75 + Fix memory/handle leak
83 + Hide AUTH feature when no users
84 + Add protection against loops
85 + Ensure case-insensitive relay routes
89 + Fully support SIZE parameter
90 + Better support for 8BITMIME