RE: [exim] Exim rejects: syntactically invalid argument

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Συντάκτης: Tony Finch
Ημερομηνία:  
Προς: Herb Martin
Υ/ο: exim-users
Αντικείμενο: RE: [exim] Exim rejects: syntactically invalid argument
On Tue, 27 Sep 2005, Herb Martin wrote:

>  Do most people think that accepting _underscore is
>    useful approach?  Trouble?


In general, lack of technical prowess is not correlated with evil. Many
legitimate sites have broken DNS, so it's generally best to give people a
break for using underscores in hostnames.

There are plenty of other things that turn up in HELO hostnames which
*are* an accurate indicator of evil behaviour.

  deny
    message        = Please use your name when saying HELO (not $sender_helo_name)
    condition      = ${if or{{ eq{$ACL_HELO}{bad} } \
                             { eq{$sender_helo_name}{$local_part} } \
                             { match{$sender_helo_name}{^[0-9.-]+\$} } \
                             { match{$sender_helo_name}{\N[.][.]|.{55}\N} } \
                             { match_domain{$sender_helo_name}{+our_domains} }} }
    set ACL_HELO   = bad


Tony.
--
<fanf@???> <dot@???> http://dotat.at/ ${sg{\N${sg{\
N\}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}\
\N}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}