Since 25th May, my email system (according to this new signature) is rife with a virus that didnt (and still doesnt) exist in these historic emails.?? These emails (an extract of the scan results is shown below) have PDF's in them but are without risk.?? Can we drop this signature please?

Thanks


D:\Datastore\hMailData\mydomain.net\ann\61\{613A996C-968D-442C-BF07-B5BA1704A79B}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\ann\84\{84206D6D-4665-4DA7-BB72-63F9FDCF8D3A}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\00\{007E306E-9A30-41E4-94F8-4ADC13B69D3F}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\03\{03EE7140-81BA-4F9C-8282-BCDF515C036A}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\04\{044E8E8F-4409-4A26-A5FA-08A8935166DB}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\05\{0509C691-0E9E-4333-8600-931E279251F6}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\06\{06EB0A67-BB7B-452E-998F-3D1D4115A2A7}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\06\{06EE8596-D4F1-4115-A0B2-FF9DD204A6E6}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\11\{11D9F311-3765-4783-8C32-9ED8F74FA53C}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\13\{13D21848-6188-4F8D-A41F-D549D3B7DD0A}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\19\{193A7E10-5024-42BF-AB93-782B8B3D678D}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\21\{21065CDC-0E74-46DF-96AB-70E7153EBDA5}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\24\{24566998-C28F-443C-9402-EB6CDEAA1D75}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\24\{247F7F9A-02B4-4E8A-B12A-6C5459CA3D97}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\24\{24868C4D-2E81-4FE3-982E-44B81FA7E4C4}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\25\{25FE91E4-9A8E-4660-BE70-C56100C6F178}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\26\{2612BBDD-22DB-4CCF-843A-6AF4FA0C2688}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\28\{28385A6B-0546-4D0D-A0E6-F8016EDF1CC8}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\2A\{2A6AFBE6-C309-49E8-8A86-7B14A29D9071}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\2A\{2AE80F71-9335-421A-BCFC-912A46391BF7}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND
D:\Datastore\hMailData\mydomain.net\sales\2B\{2B0EAE95-B98C-4778-BF63-0E70D354DC27}.eml: Win.Exploit.CVE_2019_0758-6968262-1 FOUND

and several hundred more