If you have an email address listed directly in the HTML code or
on a webpage directly (in straight text format) and if you have an
obvious email address e.g info@ you will continue to receive a lot of
spam.
You can only increase the strength of a filter so far until it starts cutting out real emails so:
Best Options to receive less are:
1) Create a new email address which isn't obviously guessable by spam software e.g. officeadmin@ or office1@
2) Set up a contact form so that the new email is embedded in the database and can't be viewed by spam software on the website.
3) You will then need to keep checking both the old and the new email,
while you phase the new one in. (being careful to only give it out to
people you trust), not for instance giving it out to companies that
might sell it to spammers somewhere along the line.
If you treat it like your mobile phone number, as in only give it out to those you know and trust then you will receive less.
You will then just need to set up Outlook on his computer to check it.
Any name that is easy to guess will automatically get spam.