Berkeley CSUA MOTD:Entry 50572
Berkeley CSUA MOTD
2018/07/20 [General] UID:1000 Activity:popular

2008/7/15-16 [Computer/Domains] UID:50572 Activity:nil
7/14    Help sendmail experts. I forward email from my own domain to I have never had any problem until recently. The problem
        happens only when eBay sends an email to my domain (as I receive the mail on my domain/my machine, and
        when it tries to forward to gmail, I get the following:
         Diagnostic-Code: X-Postfix; host <DEAD><DEAD>[w.x.y.z]
         said: 550 5.7.1 Unauthenticated email is not accepted from this
         l31si10176981rvb.6 (in reply to end of DATA command)
        What could be causing this and how do I fix it? Thanks.
        \_ anti-joe-job/spam measures, probably relying on SPF dns records. See
   Mail forwarding is a known problem for SPF,
           though you may be able to fix it for just your case. -ERic
2018/07/20 [General] UID:1000 Activity:popular

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4/9     dig txt only returns one TXT record even though domain
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2008/12/9-12 [Computer/Blog] UID:52213 Activity:nil
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2008/11/3 [Computer/SW/OS/OsX] UID:51794 Activity:nil
11/3    Anyone point me to a solution for OSX  mac printing to a windows domain\
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9/7     Dear Linux DNS experts, how do you find out if a domain has
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        \_  host -t txt $DOMAINNAME     -ERic
2008/8/25-31 [Computer/Companies/Ebay, Computer/SW/WWW/Browsers] UID:50961 Activity:nil
8/25    A guy wants to buy my domain name using Are they
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SMTP has a security hole: any connecting client can assert any sender address. The result: your mailbox fills up with bounces to messages that you didnt send. Close the hole, and we can easily block spammers by sender domain. In this mode, an MTA uses SPF to verify the envelope sender SMTP MAIL FROM address during SMTP time. But some people pointed out that SPF can also be used to verify headers to prevent phishing. When used to verify headers, the agent could be an MTA or an MUA, and slightly different rules apply: you have to consider Sender and Resent-From as well as just the From: header. As a reminder: SPF is designed to protect the envelope sender so you dont get bounces that say You sent us a virus. Caller-ID is designed to protect the headers so eBay and PayPal can limit the damage of phishing spams that say Your credit card has expired, please re-enter it here. If you are annoyed by viruses that cause you to get bounces, you should publish SPF. If you are a big institution or a bank and are concerned about phishing, you should publish Caller-ID records as well, but first you should check with Microsoft because you may need a technology license; February 12th 2004: An eWeek article discusses SPFs interaction with the IETF standards process. While it would be really nice to see the SPF draft approved as an Experimental or Draft Standard within the next few weeks, the conservatism inherent in the IETF process may require that we follow procedure, hold a BOF, charter a Working Group, and meet a few times over the next year or two. Conservatism has served the IETF well in the past, and you certainly dont want to rush something as important as this. But the problems are urgent, and people are beginning to abandon email entirely. February 11th 2004: The spec has been published as an Internet-Draft with the version number 00. Oh, and we changed the name from Sender Permitted From to Sender Policy Framework.
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Gmail is an experiment in a new kind of webmail, built on the idea that you should never have to delete mail and you should always be able to find the message you want. Use Google search to find the exact message you want, no matter when it was sent or received. Each message is grouped with all its replies and displayed as a conversation.
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