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Issue Dovecot SNI doesn't seem to be working with Plesk Premium Email Extension (Kolab/Guam)

P

peterbo

New Pleskian
I've been investing some serious hours to get Postfix/Dovecot working with SNI certifiactes and the Plesk Premium Email Extension (Kolab) now.

However,
Code: 
echo | openssl s_client -connect localhost:993 -servername xyz.com
will keep returning the global server's mail certificate, not dovecot's certificate from the local_name section.

Querying the dovecot's IMAP port directly returns the correct certificate (9993):
Code: 
echo | openssl s_client -connect localhost:9993 -servername xyz.com

How can I make the Plesk Premium Email Extension (Kolab)/Guam SNI compatible? This is quite urgent, because I confirmed a roadmap with this feature after upgrading to Obsidian.

Thank you in advance!
 
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