We don't allow "all servers" to send email at all. They have to specifically be configured to send and relay to the Exchange server which itself must be configured to allow them.
The domain, waterinvoice.com is not in general use but is used by one server (and a test server on occasion) to send automated emails to customers that request them. There are no users sending with that domain except in test scenarios. My question actually arose in response to a third party marketing company that is asking us to set up an SPF record for a third domain we purchased. The SPF record for them is fairly straight forward but it made me wonder if I wanted to implement SPF for internally generated emails which hosts should be listed. -----Original Message----- From: bind-users-boun...@lists.isc.org [mailto:bind-users-boun...@lists.isc.org] On Behalf Of Joseph S D Yao Sent: Thursday, June 18, 2009 12:16 PM To: bind-users@lists.isc.org Subject: Re: SPF/TXT records It is all too easy for mail marked as from one of your domains to be forwarded out the other mail server, if your internal mail server lets every server inside forward mail (e.g., error messages) to it. Unless you personally set up mail on all servers, in which case you are a bottleneck. I have a similar thing happening when folks from one domain send e-mail to an old-fashioned alias that just re-sends to all other members of that alias - and the mail gets rejected by SPF. This is not good, and if I don't have control of the originators' SPF records, unsolveable. -- /*********************************************************************\ ** ** Joe Yao j...@tux.org - Joseph S. D. Yao ** \*********************************************************************/ _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users Please consider our environment before printing this e-mail or attachments. ---------------------------------- CONFIDENTIALITY NOTICE: This e-mail may contain privileged or confidential information and is for the sole use of the intended recipient(s). If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you. ---------------------------------- _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
