CRITICAL FIXES:
- Sendmail queue count extraction: Changed from 'first number' (Kbytes) to 'number after in' (message count)
- Both Postfix and Sendmail now use identical extraction: grep -oE 'in [0-9]+' | grep -oE '[0-9]+'
- Exim frozen detection: Only count lines starting with [frozen] marker (not all "frozen" occurrences)
- Sendmail deferred detection: POSIX-compliant regex [[:space:]]* (not \s)
VERIFICATION RESULTS:
✅ Exim: Correctly detects frozen message markers only
✅ Postfix: Correctly extracts message count from summary (not Kbytes)
✅ Sendmail: Now correctly extracts message count matching Postfix format
✅ All three MTAs: Properly detect frozen/suspended/deferred messages
✅ Edge cases: Empty queues, large queues, special characters, UTF-8, IP addresses
✅ POSIX compatibility: All regex patterns portable across distributions
IMPROVEMENTS:
- Added detailed comments explaining extraction patterns
- Consistent queue count extraction for both Postfix and Sendmail
- Better error handling and empty queue detection
- MTA-specific help commands for troubleshooting
This script is production-ready with all parsing patterns verified against real-world MTA output.
Developer
bb7a748a32