Bug 51176 - saslauthd refuses to authenticate
saslauthd refuses to authenticate
Status: NEW
Product: UCS
Classification: Unclassified
Component: Mail
UCS 5.0
Other Linux
: P5 normal (vote)
: ---
Assigned To: Mail maintainers
Mail maintainers
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2020-04-28 11:55 CEST by Dirk Ahrnke
Modified: 2022-12-17 09:08 CET (History)
1 user (show)

See Also:
What kind of report is it?: Bug Report
What type of bug is this?: 4: Minor Usability: Impairs usability in secondary scenarios
Who will be affected by this bug?: 2: Will only affect a few installed domains
How will those affected feel about the bug?: 2: A Pain – users won’t like this once they notice it
User Pain: 0.091
Enterprise Customer affected?:
School Customer affected?: Yes
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number: 2022092821000968
Bug group (optional):
Max CVSS v3 score:


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Description Dirk Ahrnke univentionstaff 2020-04-28 11:55:13 CEST
Symptom:
Users can not send authenticated emails using SMTPS and/or Submission

messages in var/log/mail.log:

Apr 27 12:33:35 mailserver postfix/smtps/smtpd[20347]: warning: SASL authentication failure: cannot connect to saslauthd server: Connection refused
Apr 27 12:34:56 mailserver postfix/submission/smtpd[21142]: warning: SASL authentication failure: cannot connect to saslauthd server: Connection refused

Obversation:
no running saslauthd process, according to /var/log/univention/system-stats.log all preforked saslauthd processes have disappeared step by step.

The root cause is currently unknown. 

Restarting saslauthd (see https://help.univention.com/t/problem-saslauthd-refuses-to-authenticate/10152) helps until next occurence. 

The only known longer-term workaround is to disable preforking by setting UCRV mail/saslauthd/threads=0.
Comment 2 Mirac Erdemiroglu univentionstaff 2022-12-14 13:42:55 CET
Customer effected with this bug Ticket#2022092821000968