You specified encryption for this message, but the application either failed to find the encryption certificate specified in your Mail & Newsgroup Account Settings, or the certificate has expired.
Siz bu xabar uchun shifrlashni ko‘rsatgansiz, lekin ilova dastur sizning "Xat va hisob sozlamalari"ngizda ko‘rsatilgan shifrlash sertifikatini topa olmadi yoki sertifikat amal qilish muddati eskirgan.