e-mail (resident?) Viruses:: what to do?

[antsco]

Hi,
I just got an e-mail from an unknown e-mail address. By reading the text it was obvious that there was something weird.
I signalled it to the spam filter. However, just a few minutes later I receive a message saying that an email that was sent to this spammy address had been
returned....that is this e-mail self-sent itself!!! damn!
I already run my anti-virus software, but it found nothing!
What can I do to check whether some type of malware has installed in my e-mail client? (I am running TB on Windows 10)
Best

[LIMPET235]

Moving to Thunderbird Support...

[tanstaafl]

I suggest you log into webmail using a browser and see if it has the same message. If it does that would seem to rule out malware.

See http://kb.mozillazine.org/Antivirus_pro ... as_a_virus for some links to some cloud based software that will run several different anti-virus scanners against the specified file. That increases the odds of detection (though you may get a false positive from one or two).

You could also download and run the free version of malwarebytes from https://www.malwarebytes.com/solutions/free-antivirus . The free program (except when its during a trial period of the premium version) won't prevent malware but is good at detecting it and removing it.

[Ortho_Fan]

I'm wondering if a read/return receipt was automatically sent when you opened the suspicious email. Check Thunderbird's setting to see how requests for read or return receipts are handled.