Mailing list address harvested for spamming

[dovecot-e51 at deemzed.uk]

Not to stir the pot, but I notice my email address has recently been
harvested from this list for spamming purposes. This email address is
unique and not used for anything else.

I'd distinguish this from spam sent to the mailing list itself, which is
obviously different.

Is there anything further that could be done to prevent this?

-- 
Dave