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It is important to note that an e-mail can be signed by an arbitrary domains. A valid DKIM signature alone is therefore not an indicator for a trustworthy e-mail. Always check who the signer is to determine if an e-mail is trustworthy!
In some cases, the absence of a DKIM signature can be useful to identify scam e-mails. If it is known that a certain domain is signing all its e-mails with DKIM, the absence of a DKIM signature is a strong indicator for a forged e-mail.
To ease the checking of if and by who an e-mail is signed, the add-on supports the use of sign rules. With sign rules it is possible to specify that e-mails from a certain sender have to be always signed by a specific domain (also referred to as SDID). More about sign rules at https://github.com/lieser/dkim_verifier/wiki/Sign-rules.
A description of all the available add-on options can be found at https://github.com/lieser/dkim_verifier/wiki/Options.
Support is given at https://github.com/lieser/dkim_verifier/issues, http://forums.mozillazine.org/viewtopic.php?f=48&t=2704121 or by e-mail to [email protected] (in English or German).
The preferred way to report bugs is by creating an issue at https://github.com/lieser/dkim_verifier/issues.
- includes changes from 2.2.0:
- Authentication-Results header: fix relaxed parsing option and trailing ";"
- exposed option on how to treat weak keys. Default is now ignore (was warning since 2.1.0) (#174)
- fixed default text color for unsigned e-mail in dark theme if highlighting of From header is enabled (#181)
- libunbound resolver: add ability to explicitly load dependencies of libunbound (#170, #179)
- updated default rules and favicons (#165, #168, #169, #180)
- Lähdekoodi julkaistu lisenssillä MIT/X11 License