postfix cleanup process crashes with signal 11 repeatedly while handling mails for a specific user

Solution Verified - Updated -

Issue

  • When postfix/cleanup process handles mails for a specific user, the process crashes repeatedly andpostfix reports the following messages in the journal

    Raw
    [...] postfix/pickup[4476]: 91309115983C: uid=1000 from=<myuser>
[...] postfix/pickup[4476]: warning: maildrop/D19752025C83: error writing 91309115983C: queue file write error
[...] postfix/master[4475]: warning: process /usr/libexec/postfix/cleanup pid 4797 killed by signal 11

Environment

  • Red Hat Enterprise Linux 8
    • postfix

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