[rescue] S/MIME and mutt

Grant Taylor rescue at gtaylor.tnetconsulting.net
Sun Jul 20 16:16:12 UTC 2025


On 7/18/25 8:53 AM, Phil Stracchino via rescue wrote:
> ... And mutt correctly detects, extracts and processes the signature, 
> but is unable to validate the certificate.

+1 for seeing if your SSL library can validate the S/MIME signature from 
the command line.

My very limited experience with S/MIME with mutt is that it outsources 
much of the heavy lifting to underlying OS level utilities.

It may be something as simple as not having the requisite (properly 
named) cert in the chain back to known / trusted root certificate.

This type of problem should be a LOT easier to identify outside of mutt.

There's always strace et al.  Maybe temporarily replace underlying 
commands with a wrapper that calls the real binary via strace.



-- 
Grant. . . .


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