We have a sendmail server configured with starttls, by default starttls is enabled between our domain and client domain. So currently the no. of bits used are 128 by default.
I need to explcitly configure starttls for a domain such that the email is encrypted with the number of bits which I can specify say 512 or 1024 bit encryption. Please help.
I'm not sure you can do that. Do some Google searching to see. I did that and have found that most implementations are using 128-160 bit encryption.