Question Roundcube webmail

[klamort]

Server operating system version

CentOS Linux 7.9.2009 (Core)

Plesk version and microupdate number

Plesk Obsidian 18.0.59

Hello,

Often when I try to acces my webmail, I am receiving the message that safari or chrome cannot find the serveur... then à few hours later it is working again.

Any chance someone knows how to fix this problem?

Thanks.