New install - getting error: "Failed to initialize SSL server context: Couldn't parse DH parameters"

[James Brown]

I’m setting up Dovecot using Homebrew on a new server and am getting this when I try to login via IMAP:

Nov 13 14:13:35 auth: Debug: auth client connected (pid=30719)
Nov 13 14:13:35 imap-login: Info: Aborted login (no auth attempts in 0 secs): user=<>, rip=::1, lip=::1, secured, session=<gM0HNIN6HtoAAAAAAAAAAAAAAAAAAAAB>
Nov 13 14:18:33 auth: Debug: Loading modules from directory: /usr/local/Cellar/dovecot/2.3.2.1/lib/dovecot/auth
Nov 13 14:18:33 auth: Debug: Module loaded: /usr/local/Cellar/dovecot/2.3.2.1/lib/dovecot/auth/lib20_auth_var_expand_crypt.so
Nov 13 14:18:33 auth: Debug: Read auth token secret from /usr/local/var/run/dovecot/auth-token-secret.dat
Nov 13 14:18:33 auth: Debug: auth client connected (pid=30848)
Nov 13 14:18:33 imap-login: Error: Failed to initialize SSL server context: Couldn't parse DH parameters: error:0906D06C:PEM routines:PEM_read_bio:no start line: Expecting: DH PARAMETERS: user=<>, rip=::1, lip=::1, secured, session=<q7TJRYN6RdoAAAAAAAAAAAAAAAAAAAAB>
Nov 13 14:18:33 imap-login: Info: Disconnected: TLS initialization failed. (no auth attempts in 0 secs): user=<>, rip=::1, lip=::1, secured, session=<q7TJRYN6RdoAAAAAAAAAAAAAAAAAAAAB>

I’ve used:

Openssl gendh 2048

And put the output:

-----BEGIN DH PARAMETERS-----
MIIBCAKCAQEA0IF7kQX32IJFm/5HEVwYf7Be4G9iY86MvLiFLL3wHGqcPT3EMsIv
YSe5XOT0Q7DGXPOZ+DLlJq8KDHxWKNI6j/0ZaRBrF38CWj8Jqxa8pqo9FVSWj45b
JwSLqBSoBIEFWibqSE6L8wlV8xjMsB34xLHduJDNbaBzsooN749CopTkmkuGeXKH
waOEbDzlOq+qHEa4bjx2/e/TnPj0kCrMnfeU4QILo1rJwuN4nY6k7fGwgEDVa2hE
oOrVfJxxxxxxxxxyyyyyuuuixxxxblahblahblahhhkkkkkkkkkkkkXCGsxhlDQO
QmzOhHqPovzbBByO9iR5fu3xbNm9YRxPowIBAg==
-----END DH PARAMETERS——

Into a file dh.pem and then added

ssl_dh=/usr/local/etc/dovecot/dh.pem

To my dovecot.conf file.

Reloaded Dovecot but still get the same error.

Any suggestions?

macOS 10.13.6, Dovecot 2.3.2.1

Any suggestions?

Thanks,

James.
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