regarding ssl certificates

[mick crane]

Excuse dopey question.
I'm not exactly clear about certificates.
Apache2 default install has this snake oil certificate
Can make a new one for apache
Can make one for dovecot
Can make one for ssl
Is there supposed to be the one (self signed ) certificate pair in one 
place for the machine that each process hands out ?
Can they be moved to another machine ?

mick

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