How do I set up the mail shield in Avast!5Free for yahoo mail ?
What email client you use or you use web mail?
Web Mail
There is no need to the mail shield since you use your browser to view emails"which protected by Web shield" so you can remove the mail shield completely. 
Not entirely correct:
- Yes, leave the Mail Shield running
Should your system ever get a hidden/undetected trojan spambot, the first indication of the fact you are sending out spam could well be the Mail Shield intercepting outbound email for scanning. I would go a step further and suggest you set the Sensitivity to High.
Should your system ever get a hidden/undetected trojan spambot, the first indication of the fact you are sending out spam could well be the Mail Shield intercepting outbound email for scanning. I would go a step further and suggest you set the Sensitivity to High.But if you have not sett up a mail account in the mail program (Outlook express or something) how can it send ?
By using the SMTP application it comes with, most spambot come with their own very small smtp built in. They for the most part don’t use your email client.
ahaaaa, learning something new every day ;D
Yes Scott found that very early in his avast experience the Mail Shield blocking identical emails in a period of time from his system by a hidden/undetected spambot.
shouldnt the file shield detect the spambot anyways? i mean, the fileshield would perform the same type of scanning using the same database and heuristic as the mail shield just one scans the filesystem while one scans the mail protocols right? or does the mail shield have some sort of unique detection ability that i dont know of?
What do the words hidden/undetected spambot tell you, it hasn’t been detected by the file system shield or is protected by rootkit, etc.
The file shield doesn’t perform any email related heuristics as it isn’t monitoring the email ports or protocols.