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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Thanks Alan.... Shortly after I sent out the email I found the answer, well <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>an option that worked for me. I went through the MailScanner.conf and found<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># The purpose of this option is to set it to be a ruleset, so that you<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># can skip all scanning of mail destined for some of your users/customers<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># and still scan all the rest.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># A sample ruleset would look like this:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># To: bad.customer.com no<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># From: ignore.domain.com no<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># From: my.domain.com virus<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># FromOrTo: default yes<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># That will scan all mail except mail to bad.customer.com and mail from<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># ignore.domain.com. To set this up, put the 3 lines above into a file<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># called /etc/MailScanner/rules/scan.messages.rules and set the next line to<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># Scan Messages = %rules-dir%/scan.messages.rules<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'># This can also be the filename of a ruleset (as illustrated above).<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>#Scan Messages = yes<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Scan Messages = %rules-dir%/scan.messages.rules<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>My server only handles a few users, so it was fairly simple to make a list of all<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>my users and end it with a no to all the rest.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>To: <a href="mailto:*@mydomian.com">*@mydomian.com</a> no<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Now all the nonexistent users go to my "junkmail" account. I'm using sendmail<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>so I added "define(`LUSER_RELAY',`local:junkmail')dnl" to my sendmail.mc.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Since most of these would be spam, didn't see the point of using my resources to<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>send a reject email. For the odd chance that it might be a legitimate I save it to<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>the junkmail account.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Jim<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> MailScanner [mailto:mailscanner-bounces+jim=flamingoseismic.com@lists.mailscanner.info] <b>On Behalf Of </b>Alan Dobkin<br><b>Sent:</b> Friday, May 06, 2016 9:48 AM<br><b>To:</b> MailScanner Discussion<br><b>Subject:</b> Re: Nonexistent Users<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p>Jim,<o:p></o:p></p><p>Ideally, your MTA (Postfix, Sendmail, etc.) should reject mail to non-existent accounts during the initial SMTP transaction, before MailScanner ever sees it. See page 8 of the MailScanner guide book for an overview of how it works, available here:<br><a href="https://s3.amazonaws.com/mailscanner/docs/ms-admin-guide.pdf">https://s3.amazonaws.com/mailscanner/docs/ms-admin-guide.pdf</a><o:p></o:p></p><p>If you provide more details on your server configuration, someone here may be able to point you in the right direction. For example, with Postfix, see:<br><a href="http://www.postfix.org/SMTPD_ACCESS_README.html">http://www.postfix.org/SMTPD_ACCESS_README.html</a><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Rejecting mail for a non-existent recipient address. This form of ingress filtering helps to keep the mail queue free of undeliverable MAILER-DAEMON messages. This requirement is enabled by default ("<a href="http://www.postfix.org/postconf.5.html#smtpd_reject_unlisted_recipient">smtpd_reject_unlisted_recipient</a> = yes").<o:p></o:p></p></blockquote><p>If you are relaying for other mail servers, you may also want to enable recipient address verification:<br><a href="http://www.postfix.org/ADDRESS_VERIFICATION_README.html#recipient">http://www.postfix.org/ADDRESS_VERIFICATION_README.html#recipient</a><o:p></o:p></p><p>Alan<o:p></o:p></p><div><p class=MsoNormal>On 5/6/2016 9:45 AM, Jim Wirtz wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Is there a way to configure MailScanner to not process email to nonexistent users/accounts?<o:p></o:p></p><p class=MsoNormal>My server spends a lot of CPU time to check/process emails that are just going to be deleted.<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Thanks....<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Jim<o:p></o:p></p></blockquote><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>-- <br>This message has been scanned for viruses and <br>dangerous content by <b>MailScanner</b>, and is <br>believed to be clean. <o:p></o:p></span></p></div><br />--
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