hmmm.... Ours is 2048 bits.

What's the remote server?

On 12/16/2020 11:27 AM, Angus McIntyre wrote:
CentOS 8 and Qmail Toaster Ver. 1.03-3.3.1.qt.el8.

Angus



Eric Broch wrote on 12/14/20 11:50 PM:
What QMT/CentOS versions?


On 12/14/2020 6:53 PM, Angus McIntyre wrote:
My new toaster delivers mail just fine to almost all hosts. However, with one destination host I get the error:

  TLS connect failed: error:141A318A:SSL routines:tls_process_ske_dhe:
  dh key too small; connected to x.x.x.x
  I'm not going to try again ...

The question is, which host has the undersized Diffie-Hellman key? Is it my server, or the remote host?

If it's my server, how do I generate a larger DH key for qmail to use?

If it's the other server, how do I tell qmail to accept a lower level of security or no encryption at all for this particular destination?

Thanks for any advice,

Angus


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