This file is indexed.

/usr/share/doc/proxsmtp/examples/proxsmtpd.conf is in proxsmtp 1.10-2.

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The actual contents of the file can be viewed below.

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# ------------------------------------------------------------------------------
#                        SAMPLE PROXSMTPD CONFIG FILE
# ------------------------------------------------------------------------------
#
# - Comments are a line that starts with a #
# - All the options are found below with sample settings


# The address to send scanned mail to.
# This option is required unless TransparentProxy is enabled
OutAddress: 10026

# The Filter Command run for each email. See 'man proxsmtpd' for details
# The following command is a simple which just creates temp files.
#FilterCommand: tee `mktemp -t sample-filter.XXXXXX`

# The amount of time to wait for data from FilterCommand
#FilterTimeout: 10

# The type of filter ('pipe' to pipe data through filter,
# or 'file' to pass a file to the filter)
#FilterType: pipe

# The maximum number of connection allowed at once.
# Be sure that clamd can also handle this many connections
#MaxConnections: 64

# Amount of time (in seconds) to wait on network IO
#TimeOut: 180

# A header to add to all scanned email
#Header: X-Filtered: By ProxSMTP

# Keep Alives (ie: NOOP's to server)
#KeepAlives: 0

# Send XCLIENT commands to receiving server
#XClient: off

# Address to listen on (defaults to all local addresses on port 10025)
#Listen: 0.0.0.0:10025

# Directory for temporary files
#TempDirectory: /tmp

# Enable transparent proxy support
#TransparentProxy: off

# User to switch to
#User: nobody