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Tag: dkim

Outbound Email Security – Part 1 – SPF

512px-Envelope_font_awesome.svg Email, as a technology, has been around for longer than “The Web”. While one often hears about security for the web (in the form of encryption, tor, etc), rarely do people discuss email security. As with any technology there are many areas to “secure”, however this series will focus on outbound email security as…

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Tech

AWS SES + Postfix + DKIM

[ aws-logo-square-02 ][1] For the last year or so I’ve been using SendGrid to relay all emails coming from my server. I don’t send a lot of emails through the system; it’s mostly notifications from the blog and a few related automated messages. While I like paid version of SendGrid (which I’ve used at work),…

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Cloud

Configuring MediaWiki to use external SMTP

At my new company, I setup a copy of MediaWiki and wanted to make sure that all the notifications work. One kink was that the mail needed to be sent through an external service called SendGrid. Since I setup MediaWiki and it is for internal use only, I could probably have skipped the email service…

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Tech

Gmail thinks “This message may not have been sent by…” you

Yesterday, Google rolled out a new feature in Gmail which warns you when it isn’t sure who the email was sent by. This warning isn’t due to some confusion on the server side, this issue is because Google wants to force more people to use SPF records and DKIM signatures. Both of these are good…

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Apple

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