$ cat newreq.pem_new > imapd.pem
$ cat newcert.pem >> imapd.pem
$ /usr/bin/openssl gendh -rand file1:...:filen 512 >> imapd.pem
$ cat newreq.pem_new > imapd.pem
$ cat newcert.pem >> imapd.pem
$ /usr/bin/openssl gendh -rand file1:...:filen 512 >> imapd.pem