Re: [mailop] Barracuda DKIM checker reports invalid signature
Hi Sebastien > One common issue is Canonicalization. Try setting your to relaxed/relaxed and > it solves many issues. Many of these things "downconvert" the emails into > 7BITMIME and also munge certain whitespace characters, which can b0rk the > signatures. > > So try setting to relaxed/relaxed and see what happens. Thank you for that hint! Tested with an affected customer. Barracuda now also accepts the signature we generate as valid. Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G-Leiter Commerce Kunden __ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 PrattelnFax +41 61 826 93 01 Schweiz Web http://www.imp.ch __ ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Barracuda DKIM checker reports invalid signature
One common issue is Canonicalization. Try setting your to relaxed/relaxed and it solves many issues. Many of these things "downconvert" the emails into 7BITMIME and also munge certain whitespace characters, which can b0rk the signatures. So try setting to relaxed/relaxed and see what happens. -Ursprungligt meddelande- Från: Benoit Panizzon via mailop Skickat: den 13 juni 2022 11:00 Till: mailop Ämne: [mailop] Barracuda DKIM checker reports invalid signature Hi Gang Maybe I could ask for some help here... We have a DKIM issue with recipients which use Anti-Spam Products from Barracuda Networks. All tests we could find, confirm that we configured Domainkey correctly for the domain imp.ch and signatures are valid. Google is happy with our signatures. Still on recipients using Barracuda, our emails get tagged as 'spam' because: X-ASG-Block: DomainKeys (Invalid signature (imp.ch)) We asked a customer to open a case with Barracuda and all what they returned was, that our signature is invalid, which we know, is not the case. Does anyone know, what could cause Barracuda to fail checking our Domainkey signature? (this email should also be signed). Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G-Leiter Commerce Kunden __ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 PrattelnFax +41 61 826 93 01 Schweiz Web http://www.imp.ch __ ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
[mailop] Barracuda DKIM checker reports 'invalid signature'
Hi Gang Maybe I could ask for some help here... We have a DKIM issue with recipients which use Anti-Spam Products from Barracuda Networks. All tests we could find, confirm that we configured Domainkey correctly for the domain imp.ch and signatures are valid. Google is happy with our signatures. Still on recipients using Barracuda, our emails get tagged as 'spam' because: X-ASG-Block: DomainKeys (Invalid signature (imp.ch)) We asked a customer to open a case with Barracuda and all what they returned was, that our signature is invalid, which we know, is not the case. Does anyone know, what could cause Barracuda to fail checking our Domainkey signature? (this email should also be signed). Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G-Leiter Commerce Kunden __ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 PrattelnFax +41 61 826 93 01 Schweiz Web http://www.imp.ch __ ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
