1Mail::SpamAssassin::PluUgsienr::CFornotmrNiabmuMetaSeipdlo:oP:feS(rp3la)mDAoscsuamsesnitna:t:iPolnugin::FromNameSpoof(3)
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NAME

6       FromNameSpoof - perform various tests to detect spoof attempts using
7       the From header name section
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SYNOPSIS

10       loadplugin    Mail::SpamAssassin::Plugin::FromNameSpoof
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12        # Does the From:name look like it contains an email address
13        header   __PLUGIN_FROMNAME_EMAIL  eval:check_fromname_contains_email()
14
15        # Is the From:name different to the From:addr header
16        header   __PLUGIN_FROMNAME_DIFFERENT  eval:check_fromname_different()
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18        # From:name and From:addr owners differ
19        header   __PLUGIN_FROMNAME_OWNERS_DIFFER  eval:check_fromname_owners_differ()
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21        # From:name domain differs to from header
22        header   __PLUGIN_FROMNAME_DOMAIN_DIFFER  eval:check_fromname_domain_differ()
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24        # From:name and From:address don't match and owners differ
25        header   __PLUGIN_FROMNAME_SPOOF  eval:check_fromname_spoof()
26
27        # From:name address matches To:address
28        header __PLUGIN_FROMNAME_EQUALS_TO  eval:check_fromname_equals_to()
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DESCRIPTION

31       Perform various tests against From:name header to detect spoofing.
32       Steps in place to ensure minimal FPs.
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CONFIGURATION

35       The plugin allows you to skip emails that have been DKIM signed by
36       specific senders:
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38        fns_ignore_dkim googlegroups.com
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40       FromNameSpoof allows for a configurable closeness when matching the
41       From:addr and From:name, the closeness can be adjusted with:
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43        fns_extrachars 50
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45       Note that FromNameSpoof detects the "owner" of a domain by the
46       following search:
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48        <owner>.<tld>
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50       By default FromNameSpoof will ignore the TLD when testing if From:addr
51       is spoofed.  Default 1
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53         fns_check 1
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55       Check levels:
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57        0 - Strict checking of From:name != From:addr
58        1 - Allow for different tlds
59        2 - Allow for different aliases but same domain
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TAGS

62       The following tags are added to the set if a spoof is detected. They
63       are available for use in reports, header fields, other plugins, etc.:
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65         _FNSFNAMEADDR_
66           Detected spoof address from From:name header
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68         _FNSFNAMEDOMAIN_
69           Detected spoof domain from From:name header
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71         _FNSFNAMEOWNER_
72           Detected spoof owner from From:name header
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74         _FNSFADDRADDR_
75           Actual From:addr address
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77         _FNSFADDRDOMAIN_
78           Actual From:addr domain
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80         _FNSFADDROWNER_
81           Actual From:addr detected owner
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EXAMPLE

84       header   __PLUGIN_FROMNAME_SPOOF eval:check_fromname_spoof() header
85       __PLUGIN_FROMNAME_EQUALS_TO eval:check_fromname_equals_to()
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87       meta     FROMNAME_SPOOF_EQUALS_TO  (__PLUGIN_FROMNAME_SPOOF &&
88       __PLUGIN_FROMNAME_EQUALS_TO) describe FROMNAME_SPOOF_EQUALS_TO
89       From:name is spoof to look like To: address score
90       FROMNAME_SPOOF_EQUALS_TO 1.2
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94perl v5.34.0                      2M0a2i1l-:0:7S-p2a3mAssassin::Plugin::FromNameSpoof(3)
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