27 Oct
2022
27 Oct
'22
1:14 p.m.
On 2022-10-27 05:34, Hartmut W Sager wrote:
One quick thought does come to mind. Any chance you're using 2048-bit DKIM and that Yahoo can only work with 1024-bit DKIM? I encountered that in one of my study cases, where the receiving mail system can't verify.2048-bit DKIM.
Or the other way around. A few ESPs have been randomly reject 1024-bit DKIM-signed messages, depending on the server where it lands on their end.
-Alberto