OpenSSL Checks to verify the certs:

#To verify the Root CA CA.pem and Intermediate CA ICA.pemopenssl verify -CAfile CA.pem ICA.pem#To create the CA chain ( In Linux or just add files together in […]

450 4.5.0 Unable to proxy recipient

Recently a user tried to send an email from 365 to 365 user  ( external not internet ) and got the following bounce back  Generating server: SYYP282MB0848.AUSP282.PROD.OUTLOOK.COMRemote Server […]