Webmail shows 500 Internal Server Error: can't read SMFIC_BODYEOB reply packet header: Connection timed out

Created:

2017-02-02 13:59:32 UTC

Modified:

2017-08-08 13:21:17 UTC

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Webmail shows 500 Internal Server Error: can't read SMFIC_BODYEOB reply packet header: Connection timed out

Applicable to:

  • Plesk for Linux

Symptoms

  • Logging into webmail fails:
    500 Internal Server Error
  • Errors in /var/log/maillog:
    postfix/anvil[3153]: statistics: max connection rate 6/60s for (submission:203.0.113.2) 
    postfix/anvil[3153]: statistics: max connection count 3 for (smtp:203.0.113.2)
    postfix/anvil[3153]: statistics: max cache size 3
    postfix/cleanup[5018]: warning: milter inet:127.0.0.1:12768: can't read SMFIC_BODYEOB reply packet header: Connection timed out
    postfix/cleanup[5018]: 352AC4895E: milter-reject: END-OF-MESSAGE from unknown[203.0.113.2]: 4.7.1 Service unavailable - try again later; from=<john.doe@example.com> to=<mailbox@example.com> proto=ESMTP helo=<>

Cause

  • Dovecot and pc-remote services are hung.
  • Milter crashed.

Resolution

Restart dovecot and pc-remote services:

# service dovecot restart
# service pc-remote restart
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