[FIXED BUG] Unable to set SNI certificates for mail (Postfix) using Let's Encrypt certificates

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    Lenor (Edited )

    Any Solution here?

    I am using Let's encrypt and have latest Updates installed, last check today. 

    I got Errors in Maillog, TLS SNI XY from XY[xx.xx.xx.xx] not matched, using default chain

     

    Moreover and truly this affects only obsidian. on other older Server no Problems. 

    I just saw many such fails -.-

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    Alexey Lapshin

    Hello @Lenor

    The most probable cause of the issue is the fact that many domains use one IP address and the global certificate for a mail from Plesk > Tools & Settings > SSL/TLS Certificates > Certificate for securing mail. So, to use SNI it is necessary to set separate certificates for each domain there Plesk > Domains > example.com > Mail Settings > SSL/TLS certificate for mail.

    However, it should not affect email delivery.

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