The certificate used to sign the message was issued by a certificate authority whose own certificate has expired. Make sure your computer's clock is set correctly.
D'eisigh údarás teastas a bhfuil a theastas féin as dáta an teastas lena shíníodh an teachtaireacht. Féach chuige go bhfuil clog do ríomhaire socraithe i gceart.