Postfix fails to start with error: bad numerical configuration

Created:

2016-11-16 12:57:54 UTC

Modified:

2017-04-24 12:06:03 UTC

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Postfix fails to start with error: bad numerical configuration

Applicable to:

  • Plesk 12.5 for Linux

Symptoms

Postfix fails to start with error:

#  /usr/sbin/postfix start
postfix: fatal: bad numerical configuration: message_size_limit = 40960000smtpd_tls_mandatory_protocols = TLSv1

Cause

Postfix configuration file main.cf is misconfigured, does not have line break between 2 parameters:

# less /etc/postfix/main.cf |grep message_size_limit
message_size_limit = 40960000smtpd_tls_mandatory_protocols = TLSv1

Resolution

Make sure that main.cf is not misconfigured. Correct it as below:

# less /etc/postfix/main.cf
.....
message_size_limit = 40960000
smtpd_tls_mandatory_protocols = TLSv1
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