We are using OTRS, which receive mail through external mail provider via IMAPS.
Mail provider is going to stop supporting mail clients which use unsafe SHA-1 signing algorithm. To continue using this mail provider we must be sure that our OTRS uses exactly SHA-256 algorithm to sign certificates during IMAPS session.
How could I check, what signing algorithm is used for IMAPS? Where can i find configs for this?
OTRS: 4.0.13
OS: CentOS 7.1
OTRS: using SHA-256 algorithm for IMAPS sessions
Moderator: crythias