> On Mar 27, 2017, at 3:06 PM, Alejandro Cabrera Obed <aco1...@gmail.com> wrote:
>
> Dear, thanks....is it possible that the STARTTLS settings slow down mail
> processing? In this mail relay server, the connections as "client" to the
> corporate mail server are always encrypted with the TLS, with the
> corresponding negotiation.
TLS is not generally a major source of latency. The issue is more
likely delays in PTR lookups of the client's IP by the server, or
excessive load on the server. Of misconfigured synchronous logging
on the client, ... See QSHAPE_README.
--
Viktor.
