|Email Plug-in (Reporting):||1.1.0-114|
|Email Plug-in (Encryption):||1.2.1-118|
after configuring TLS in ESA (Destination control TLS preferred, Mail Policy-Default Policy Parameter TLS preferred). In order test it we send email and receive form different domains. It works as expected. But users complained that they were not able to send email to some domains. Actually they send email but other side not accept it. After checking TLS logs and message tracking i observed that email is sent from our ESA. but i don't understand why it didn't reach to destination. it is so urgent please help me to solve this problem.
I have this problem very often..nearly always a certificate problem.
check the destination domain with this site
maybe you need to install the certificate from the destination server.
You can get the certificate also from the site (screenshot 1.jpg )
Install the certificate on (cisco ESA)
/network/certificates-->Edit Settings --> Custom List (export List)--->insert the certificate (PEM format) and reinstall the list (screenshot 2.jpg)
We have mail.company.com certificate.But we have added Cisco ESA's default certificate. do you thing it would cause that issue?
I will test one more thing and i will turn you back with the result. thanks