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Using Reply-to with PGP

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I have set up PGP with the following guide: https://support.mozilla.org/en-US/kb/openpgp-thunderbird-howto-and-faq#thunderbird:linux:tb115

Under test set up it says I only have to ensure that the from: email is correct.

But what if I use a different reply-to email address?

for example:

  • Person A has a PGP is set up for PrsA@example.com, they also publish their public key in https://keys.openpgp.org/, Their reply-to email is PersonA-lastname@example.com
  • Person A sends email with PGP public key attached to Person B. Person A already has Person B's public key.
  • Person B receives the public key and saves the cert in relation to PersonA-lastname@example.com just to be sure they go to https://keys.openpgp.org/ to check but it is not there.
  • Person B sends an encrypted email to their only known address (personA-lastname@example.com) with the encryption public key provided.
  • Would Person A be able to receive the email?


tests I have done:

  • I tried this with edward-en@fsf.org and I get an email back saying: Diagnostic-Code: smtp; 550 Edward needs reply-to or from to be the same as envelope from
  • I tried this to myself and I am able to read the email.
I have set up PGP with the following guide: https://support.mozilla.org/en-US/kb/openpgp-thunderbird-howto-and-faq#thunderbird:linux:tb115 Under test set up it says I only have to ensure that the from: email is correct. But what if I use a different reply-to email address? for example: * Person A has a PGP is set up for PrsA@example.com, they also publish their public key in https://keys.openpgp.org/, Their reply-to email is PersonA-lastname@example.com * Person A sends email with PGP public key attached to Person B. Person A already has Person B's public key. * Person B receives the public key and saves the cert in relation to PersonA-lastname@example.com just to be sure they go to https://keys.openpgp.org/ to check but it is not there. * Person B sends an encrypted email to their only known address (personA-lastname@example.com) with the encryption public key provided. * Would Person A be able to receive the email? tests I have done: * I tried this with edward-en@fsf.org and I get an email back saying: Diagnostic-Code: smtp; 550 Edward needs reply-to or from to be the same as envelope from * I tried this to myself and I am able to read the email.

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