Article ID: 125536, created on May 18, 2015, last review on May 20, 2015

  • Applies to:
  • Plesk 11.5 for Linux


Postfix milter is not working properly. '/var/log/maillog' contains the following message:

postfix/smtpd[3089]: warning: milter inet: can't read SMFIC_RCPT reply packet header: Connection timed out


Incorrect milter protocol version.


  1. Check 'milter_protocol' version:

    postconf milter_protocol

    milter_protocol = 2

  2. Change 'milter_protocol' value to '6' in '/etc/postfix/' and reload Postfix.

    postfix reload

Search Words

milter crashed

postfix milter

Milter SMFIC_HEADER failure

can't read SMFIC_RCPT reply packet header

psa-pc-remote crashed

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