We've recently switched to using LetsEncrypt for our Exchange certificates, which have a maximum validity of 90 days.
Unfortunately this means I'm being pestered with tickets generated by our monitoring system due to Event 12018 occurring.
Application log generated Error Event 12018 on <myserver>
Log: Application
Type: Error
Event: 12018
Agent Time: 2018-05-18 00:00:30Z
Source: MSExchangeTransport
Category: TransportService
Username: N/A
Computer: <myserver>.local
Description: The STARTTLS certificate will expire soon: subject: CN=Let''s Encrypt Authority X3, O=Let''s Encrypt, C=USCN=<mydomain>, thumbprint: <certthumbprint>, hours remaining: 2159. Run the New-ExchangeCertificate cmdlet to create a new certificate.
2159 hours is 89.95 days.
Is it possible to change this threshold to something like 336 hours (2 weeks)?
Никогда не слышал, что есть способ изменить этот порог, это сделано намеренно, дает вам достаточно времени, чтобы зарегистрировать управление изменениями и получить сертификат от вышестоящего провайдера.