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bug report: opendkim crashes on startup聽#4691

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bug report: opendkim crashes on startup#4691
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issue/limited supportDue to a specific configuration on the user side only limited support is offeredDue to a specific configuration on the user side only limited support is offeredkind/bug/reportA report about a bugA report about a bugmeta/needs triageThis issue / PR needs checks and verification from maintainersThis issue / PR needs checks and verification from maintainersmeta/staleThis issue / PR has become stale and will be closed if there is no further activityThis issue / PR has become stale and will be closed if there is no further activity
@wkraaij

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@wkraaij
wkraaij
opened on Mar 31, 2026
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馃摑 Preliminary Checks

  • I tried searching for an existing issue and followed the debugging docs advice, but still need assistance.
  • I will disclose any AI assistance I have used with the information I provide in my report, so that I do not waste the time of humans trying to help me.

馃憖 What Happened?

I am installing mailserver: latest on my Synology NAS using, Portainer. The logfile shows that opendkim cannot be started. It crashes and is restarted.

馃憻 Reproduction Steps

I did run sudo docker exec -it mailserver setup config dkim 2026-03-31 10:09:03+00:00 INFO open-dkim: Creating DKIM private key '/tmp/docker-mailserver/opendkim/keys/XXXX.XX/mail.private'
(domain name hidden) , but this did not help

馃悑 DMS Version

v15.1.0

馃捇 Operating System and Architecture

Linux Synology 3.10.108 #86009 SMP Wed Nov 26 18:29:22 CST 2025 x86_64 GNU/Linux synology_braswell_216+II

鈿欙笍 Container configuration files

I am using Portainer

馃摐 Relevant log output

`2026-03-31T10:11:49.836275+00:00 mail opendkim[852]: can't configure DKIM library: failed to initialize resolver

2026-03-31 10:11:49,838 WARN exited: opendkim (exit status 70; not expected)

2026-03-31T10:11:49.870354+00:00 mail opendkim[855]: can't configure DKIM library: failed to initialize resolver

2026-03-31T10:11:49.872889+00:00 mail opendkim[854]: exited with status 70

2026-03-31T10:11:49.874698+00:00 mail opendkim[854]: can't configure DKIM library: failed to initialize resolver

2026-03-31 10:11:50,878 WARN exited: opendkim (exit status 70; not expected)

2026-03-31T10:11:51.989023+00:00 mail opendkim[860]: can't configure DKIM library: failed to initialize resolver

2026-03-31T10:11:51.991562+00:00 mail opendkim[859]: exited with status 70

2026-03-31T10:11:51.992191+00:00 mail opendkim[859]: can't configure DKIM library: failed to initialize resolver

2026-03-31 10:11:51,994 WARN exited: opendkim (exit status 70; not expected)

2026-03-31T10:11:52.025075+00:00 mail opendkim[862]: can't configure DKIM library: failed to initialize resolver

2026-03-31T10:11:52.028034+00:00 mail opendkim[861]: exited with status 70

2026-03-31T10:11:52.029784+00:00 mail opendkim[861]: can't configure DKIM library: failed to initialize resolver

2026-03-31 10:11:53,033 WARN exited: opendkim (exit status 70; not expected)`
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    issue/limited supportDue to a specific configuration on the user side only limited support is offeredDue to a specific configuration on the user side only limited support is offeredkind/bug/reportA report about a bugA report about a bugmeta/needs triageThis issue / PR needs checks and verification from maintainersThis issue / PR needs checks and verification from maintainersmeta/staleThis issue / PR has become stale and will be closed if there is no further activityThis issue / PR has become stale and will be closed if there is no further activity

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