http://wiki.ursine.ca/Best_Online_Quoting_Practices
Please avoid quoting in reverse order as it reduces readability.
What I am shooting for is a way not to publish my email adddress on
Usenet. Having a link to web page would make it harder to harvest my
email address.
This is not the problem you're trying to solve.
The real problem is that your email provider is not giving you enough
control over what gets rejected at SMTP time. All good spam antispam
measures must do a few things to be considered effective in the real
world:
1) Minimize the number of false-positives generated. Any anti-spam
measure is not supposed to treat legitimate email as spam.
2) Minimize the number of false-negatives generated. Any anti-spam
measure is not supposed to treat spam as legitimate email.
3) Never place stumbling blocks in the way of users. No anti-spam
measure should ever require additional effort on the part of the
sender.
Munging email addresses in email and news posts fails on all three
points soundly.
1) Munging considers all email spam regardless of content or source.
2) Munging assumes anybody able to replace an email address is not a
spammer.
3) Munging is a potentially insurmountable stumbling block for end
users, especially if there is no way to unmunge the address in
question.
So, the correct solution to the problem you're trying to solve? Shop for
email service provider that gives you control over what content and
sources you're willing to accept from at SMTP time. Undesirable
content gets rejected at the mail server, you get everything else.