Issues

• Consolidate crypto on rustls/AWS-LC, as groundwork for a FIPS build

  KumoCorp/kumomta#677 · Filter by author terrorobe opened on Nov 11, 2026

• A ready queue that refreshes on the epoch keeps a skipped epoch, and so its old path

  KumoCorp/kumomta#675 · Filter by author twisted1919 opened on Nov 10, 2026

• Add the ability to make egress IPs "sticky" between retries

  enhancementNeeds Funding
  KumoCorp/kumomta#670 · Filter by author tommairs opened on Nov 9, 2026

• Support bounded HTTP batching for independent static and templated injection requests

  KumoCorp/kumomta#669 · Filter by author mkarttik27 opened on Nov 6, 2026
  4

• mod-redis: no cluster connection can be created while one node times out (pool create_timeout is connect_timeout)

  bug
  KumoCorp/kumomta#663 · Filter by author twisted1919 opened on Oct 30, 2026

• Large messages to slow receivers fail with "Timed Out sending message payload data" regardless of data_timeout

  bug
  KumoCorp/kumomta#661 · Filter by author nstern215 opened on Oct 28, 2026

• Queued loggers keep each record's message in memory until the record is written

  bug
  KumoCorp/kumomta#657 · Filter by author twisted1919 opened on Oct 27, 2026

• Add functionality to queues helper to be able to select an egress_pool based on provider

  Needs Funding
  KumoCorp/kumomta#650 · Filter by author tommairs opened on Oct 22, 2026

• HTTP injection rebuilds string content even with the Static template dialect, breaking DKIM signatures applied before injection

  bug
  KumoCorp/kumomta#648 · Filter by author twisted1919 opened on Oct 21, 2026
  1

• TSA file seems to have outdated regex for Gmail

  KumoCorp/kumomta#642 · Filter by author sivertbjo opened on Oct 16, 2026
  1

• HTTP API inject endpoint transaction-level hook

  KumoCorp/kumomta#639 · Filter by author ewandennis opened on Oct 15, 2026

• Docs/config defaults to prevent problems for high-volume webhook users

  bug
  KumoCorp/kumomta#635 · Filter by author twotwotwo opened on Oct 14, 2026

• Lua runtime can behave like an unbounded queue in RAM

  bug
  KumoCorp/kumomta#631 · Filter by author twotwotwo opened on Oct 8, 2026
  2

• ARC verification: a failing older AMS fails the whole chain

  KumoCorp/kumomta#627 · Filter by author terrorobe opened on Oct 7, 2026

• ARC verification: up to 50 body hashes per message, including invalid chains

  KumoCorp/kumomta#626 · Filter by author terrorobe opened on Oct 7, 2026

• SPF: missing void-lookup limit and time budget; address lookups query both families

  KumoCorp/kumomta#625 · Filter by author terrorobe opened on Oct 7, 2026

• MTA-STS discovery: TXT record selection, cached-policy fallback and retry interval

  KumoCorp/kumomta#624 · Filter by author terrorobe opened on Oct 7, 2026

• Error 421 on empty recipient list should be 5xy

  KumoCorp/kumomta#619 · Filter by author bbkr opened on Oct 5, 2026

• max_messages_per_connection - Not clear what is the allowed maximum

  documentation
  KumoCorp/kumomta#618 · Filter by author bbkr opened on Oct 5, 2026
  3

• Outbound TLS posture isn't guaranteed to match MTA-STS, DANE or enable_tls

  KumoCorp/kumomta#612 · Filter by author terrorobe opened on Sep 30, 2026
  3

• egress_pool log field shows cached/stale pool name when the same source is used across multiple pools

  KumoCorp/kumomta#610 · Filter by author elmargrote-optimizely opened on Sep 29, 2026

• lruttl: a single global config epoch forces unrelated memoized caches to invalidate together, causing spurious lookup failures under load

  KumoCorp/kumomta#602 · Filter by author shivamgoel1009 opened on Sep 21, 2026
  1

• Slow shaping_data lruttl refresh can lead to many Lua contexts -- allow stale by default?

  bug
  KumoCorp/kumomta#601 · Filter by author twotwotwo opened on Sep 21, 2026
  2

• Fix empty log files when specifying --diag-log-dir

  KumoCorp/kumomta#595 · Filter by author 0xcdcdcdcd opened on Sep 13, 2026

• Back-off set during throttle_insert_ready_queue is discarded, forcing throttled messages to re-check every 0–60s

  bug
  KumoCorp/kumomta#593 · Filter by author oraheem opened on Sep 3, 2026
  2