Symptoms
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Tools & Settings > SSL/TLS Certificates > Certificate for securing mail > Change fails with error:
HTTP ERROR 500
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Operations in Plesk fail: Allowed memory size of X bytes exhausted (tried to allocate Y bytes) was used to increase memory_limit up to 5000M and is still not helping.
Cause
Product issue:
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#PPPM-12350 “The server-wide certificates page (Tools & Settings > SSL/TLS Certificates (under “Security”)) no longer fails to be opened if the server has a large number of subdomains (more than 500) secured with SSL/TLS certificates.”
Fixed in:- Plesk Obsidian 15 September 2020
Resolution
Please consider updating your server:
Workaround
If update is not possible for some reason you may try the following
workaround
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Connect to the server via SSH.
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Change the certificate via command line:
# plesk bin mailserver –set-certificate “cert3” -certificate-repository example.net
Note: the certificate name can be retrieved from Tools & Settings > SSL/TLS Certificates or from Domains > example.com > SSL/TLS Certificates.
with