Any VB script or other means to strip signatures in Outlook?

So we all use hybrid signatures (text with a graphic).  We also use online collaboration software that you can follow by email.  I would like to set up some solution that strips any signature to a particular email address or domain so they don't keep being replicated in our online collaboration system.  Any idea how that can be done?
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Jian An LimSolutions ArchitectCommented:
depends on how you can do it.

Usually, you can ask your online collaboration systems to ignore any text after a certain string

for example, yammer email reply ignore any text after it sees a combination of - -

it is much easier then touching on the outlook end as it break the non-repudiation of an email (which also might break uniqueness of an email or etc)

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