Though I would never put such a thing in a standards document, OpenDKIM does have the capability to rewrite arriving header fields prior to signing/verifying to overcome things like this. Your ESP's verifier could be trained to ignore the added line prior to verifying, or better yet, do DKIM verification prior to AV processing.
-MSK On Mon, Sep 15, 2014 at 12:31 PM, Henrik Schack <henrik.sch...@gmail.com> wrote: > No it's not at all a free service. But they advertise anyway :-( > Br > Henrik > > On Mon, Sep 15, 2014 at 9:28 PM, Franck Martin <fmar...@linkedin.com> > wrote: > >> >> On Sep 15, 2014, at 7:39 PM, Henrik Schack <henrik.sch...@gmail.com> >> wrote: >> >> > In Denmark we have a somewhat large (10K+ domains) anti-virus/spam >> provider breaking DKIM signatures. >> > They break DKIM signatures on incoming email by adding a "Virus scanned >> by xxxx" line to the body of the email. >> > >> > Not sure how to fix this, but perhaps some day they'll get tired of my >> bi-monthly calls and emails complaining about how they do things. >> > >> >> >> Is this a free service that they have to advertise themselves in the body >> of the email? If you pay for the service, may be you don’t want to get any >> advertisement? >> >> _______________________________________________ >> dmarc mailing list >> dmarc@ietf.org >> https://www.ietf.org/mailman/listinfo/dmarc >> >> > > > -- > Mvh/Best regards > Henrik Schack > ICQ: 889295 > http://henrik.schack.dk/ > http://links.schack.dk/ > > _______________________________________________ > dmarc mailing list > dmarc@ietf.org > https://www.ietf.org/mailman/listinfo/dmarc > >
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