Request not opening on new email creation

Request not opening on new email creation

Hello,

I am new on this forum so my apology if I'm not asking on the right thread.
So, I am having problem with my manageengine service desk, particularly with request creation through email.
Everything was working fine until today. I've tried to restart server, mssql... I can see that mails are forwarding to mail account that is designated for request creation.
It would be wery kind from you if you could point me where to look for the problem.

Thank you in advance.

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