I'm using EAsendmail for .NET v 7.5.0.3
And try to change dkim signature from "a=rsa-sha256; c=relaxed/relaxed;" to "a=rsa-sha1; c=simple/simple;"
currently I including with:

oMail.Headers.ReplaceHeader("X-DK-File", "dkiminfo.txt");

I already tried adding to this file: "method: nofws"

Also I tried:
oMail.SignatureHashAlgorithm = SignatureHashAlgorithmType.SHA1;

nothing change..

any suggestion?

Edited by user Friday, April 2, 2021 7:42:28 AM(UTC)  | Reason: Not specified