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C.14 Upgrading from 4.2 to 4.3.x

Upgrading from 4.2 to 4.3 or 4.3.1 does not require any changes to your configuration and scripts. The only notable change in these versions is the following:

The asynchronous syslog implementation was reported to malfunction on some systems (notably on Solaris), so this release does not enable it by default. The previous meaning of the --enable-syslog-async configuration option is also restored. Use this option in order to enable asynchronous syslog feature. To set default syslog implementation, use DEFAULT_SYSLOG_ASYNC configuration variable (see syslog-async).

The following deprecated features are removed:

  1. #pragma option ehlo statement.

    It became deprecated in version 4.0. See pragma-option-ehlo.

  2. #pragma option mailfrom statement.

    It became deprecated in version 4.0. See pragma-option-ehlo.

  3. The --config-file command line option.

    It became deprecated in version 3.1. See Upgrading from 3.0.x to 3.1.

  4. Built-in exception codes in catch statements.

    They are deprecated since version 4.0. See Upgrading from 3.1.x to 4.0.