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Message: <blockquote data-quote="Tristol" data-source="post: 3791701" data-attributes="member: 19520">I run a domain in which several people there subscribe to the forums here. As such, they get e-mails whenever new threads are posted. I happened to be poking at the logs, and noticed that there are a large number of rejected e-mails that are coming from the website. I'll post the snippet of sendmail and milter logs that matters and explain briefly what it means. If someone needs help resolving the issue, I'd be glad to provide some input.Sep 24 10:34:46 vixen sm-mta[29987]: STARTTLS=server, relay=IDENT:0@www.enworld.org [65.127.163.19], version=TLSv1/SSLv3, verify=NO, cipher=DHE-RSA-AES256-SHA, bits=256/256Sep 24 10:34:47 vixen sm-mta[29987]: l8OEYknQ029987: from=<nobody@enworld.cyberstreet.com>, size=1984, class=0, nrcpts=1, msgid=<200709241430.bac67d935504@www.enworld.org>, proto=ESMTP, daemon=MTA, relay=IDENT:0@www.enworld.org [65.127.163.19]Sep 24 10:34:47 vixen sid-filter[29990]: l8OEYknQ029987 can't determine responsible domain from `"Eeee Ennn World - Morrus' D&D / 4th Edition / d20 News" <>'Sep 24 10:34:47 vixen sm-mta[29987]: l8OEYknQ029987: Milter: data, reject=550 5.7.1 can't identify domain in `"Eeee Ennn World - Morrus' D&D / 4th Edition / d20 News" <>'In short, notice that it greats the mailserver and provides the envelope sender of <a href="mailto:nobody@enworld.cyberstreet.com">nobody@enworld.cyberstreet.com</a>. Not a problem there, but then notice that the sid-filter is examining the 'From' address posted into the e-mail headers. This from address is what's included on the last two lines. Properly formatted 'from' addresses should include the name, followed by a < the e-mail address, and a closing >. There are different formats, but it appears that the e-mail being sent only includes a name, no from address.I'm not exactly sure if it's always been this way, but it's technically a misconfiguration as anyone running spam filterting software may reject e-mails because of the invalid format. The next e-mail I get from the forums at my yahoo address I'll post the pertinent headers of so that more information is available to whoever may want to fix this (if someone wants to fix it).</blockquote>

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