My work PC and server have constantly updated virus detection programs and Firewalls. I also scan my hard disks regularly. Therefore, messages I send should not have viruses attached.
The only messages I send are replies to emails I have received — I do not generally send emails to people who have not contacted me first.
If you send me an email and get a response, you will usually be able to recognize that the message is coming from me:
If you have received an email from my email address that may be a spam or a virus on someone else's PC that has copied my address and pasted it onto the email as the address of the sender.
The message is not from me if:
Please do not open suspicious-looking emails, especially attachments.