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canna change law physics
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Spammer Spoofing our e-mail address
A spam-mer is spoofing our e-mail domain. He is using a non-existing e-mail address from our domain as the spoofed return address. I only know about this since I get the rejected echo's. I have a "catch all" on the domain. If someone misspells an address, I can forward it.
Anyone have any ideas on how to stop this? Turning off the catch-all will only stop me from knowing it is happening.
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James The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994) Red-beard for President, 2020 |
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07-27-2012, 11:49 AM
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Registered
Join Date: Mar 2003
Posts: 10,324
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Set up SPF records on your dns.
Of course, this assumes that you don't send mail thru a ton of different networks - rather, you use an in-house SMTP server and a webmail system, or perhaps one or two other SMTP servers. SPF means "these SMTP servers are allowed to send mail that appears to come from our domain" Sender Policy Framework - Wikipedia, the free encyclopedia
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“IN MY EXPERIENCE, SUSAN, WITHIN THEIR HEADS TOO MANY HUMANS SPEND A LOT OF TIME IN THE MIDDLE OF WARS THAT HAPPENED CENTURIES AGO.” |
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07-27-2012, 11:55 AM
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Get off my lawn!
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The company I worked for back when the internet was new had a domain and did email with that domain. Some spammers started spoofing it and we ended up on a black list for email. It was a real pain to ever straighten that out.
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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07-27-2012, 12:19 PM
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canna change law physics
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I'm on hold with my e-mail/website company. I do not want to get my domain blacklisted. The information on the site says they provide SPF for these domains.
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James The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994) Red-beard for President, 2020 |
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07-27-2012, 12:44 PM
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canna change law physics
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Good news, the offer SPF, but they don't do it unless requested...
Operational in 48 hours. Thanks, ID10T!!
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James The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994) Red-beard for President, 2020 |
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07-27-2012, 01:11 PM
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Registered
Join Date: Jul 2005
Location: Seattle
Posts: 5,823
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Quote:
The Spamhaus Project
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'85 911. White - 53,000 miles bought 3-16-07. "Casper" '88 924S. Blue - 120k miles bought with 105k miles. '94 968 Coupe - White - 108,000 miles bought 9-28-17 '09 Cayman - Grey - bought 9-8-20 |
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07-27-2012, 03:43 PM
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Registered
Join Date: Mar 2003
Posts: 10,324
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Quote:
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“IN MY EXPERIENCE, SUSAN, WITHIN THEIR HEADS TOO MANY HUMANS SPEND A LOT OF TIME IN THE MIDDLE OF WARS THAT HAPPENED CENTURIES AGO.” |
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07-27-2012, 05:14 PM
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canna change law physics
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Our mail server is independently of the local ISP.
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James The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994) Red-beard for President, 2020 |
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07-27-2012, 07:04 PM
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canna change law physics
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Irony: My spam filter just received the same message, but from a different spoofed address.
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James The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994) Red-beard for President, 2020 |
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07-27-2012, 07:11 PM
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1970/1982 Porsche 914-6/911SC 2.7 RS
Carrera
