Postfix SMTP Process Crashes with Segmentation Fault When FIPS Mode Is Enabled

Issue

• Unable to send an email due to smtp process crashing

• When FIPS mode is active, the Postfix SMTP process crashes unexpectedly, causing email delivery failures. The system logs indicate segmentation faults related to the SMTP process.

  Nov 15 xx:xx:xx localhost kernel: smtp[603355]: segfault at 0 ip 0000000000000000 sp 00007fff6316ea18 error 14 in smtp[555d298c9000+1e000]
  Nov 15 xx:xx:xx localhost kernel: Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
  

  • Example mail logs:

  Sep 24 13:09:32 localhost  postfix/master[2747058]: warning: process /usr/libexec/postfix/smtp pid 605040 killed by signal 11