NAME¶

pffrombyto - List "from" addresses by "to" whom in Postfix log file

Copyright (C) 2007-2025 by James S. Seymour, Release 1.2

SYNOPSIS pffrombyto -[bchrRv] <recipient> [mailfile]¶

    If no file(s) specified, reads from stdin.  Output is to stdout.

DESCRIPTION¶

    pffrombyto parses Postfix log files to generate a list of "from" addresses,
    based on a specified "to" address or address fragment.

OPTIONS¶

    -b Include bounces
    -c Include client hostnames/addrs, as well
    -h Emit help message and exit
    -r Include rejects
    -R Hard rejects only
    -v Emit version and exit

RETURN VALUE¶

    pffrombyto doesn't return anything of interest to the shell.

ERRORS¶

    Error messages are emitted to stderr.

EXAMPLES¶

    Generate a list of all the senders of email to the recipient
    "username@example.com"
        pffrombyto username@example.com /var/log/maillog
    As a convenience, pffrombyto tries to intelligently determine how to
    handle regexp meta-characters.  If it's passed a search expression
    that does NOT contain meta-character escapes ("\"), it will assume
    that "." and "+" are literals, and will escape them for you.  In the
    example above, the "." in the FQDN part of the search term would've
    been automatically escaped for the user.  Likewise:
        pffrombyto username+foo@example.com /var/log/maillog
    would have the "+" and "." escaped.  If you wanted to find all
    plussed targets for "username," you'd have to do:
        pffrombyto 'username\+.+@example\.com' /var/log/maillog

SEE ALSO¶

    pflogsumm, pftobyfrom

NOTES¶

    All search terms and searched fields are lower-cased.
    The pffrombyto Home Page is at:
        http://jimsun.LinxNet.com/postfix_contrib.html

REQUIREMENTS¶

    Perl

LICENSE¶

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.
    
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    
    You may have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
    USA.
    
    An on-line copy of the GNU General Public License can be found
    http://www.fsf.org/copyleft/gpl.html.