Hi there,
Since a couple of hours I am unable to send emails through my RoundCube account. When clicking "Send", I get the following message:
SMPT Error (452): Failed to set sender "info@mycompany.com" (4.3.1 Insufficient system storage).I have deleted all unnecessary emails and am currently only using 4% of the storage.
Does anyone know what to do to resolve this?
Thank you in advance!