Discard mail with from date older than xxxx

[Trever L. Adams]

I know that sieve doesn't do math. The file would be created externally.

Based on examples in section 4.4 of
https://tools.ietf.org/html/rfc5260#section-4

I figured something like this would work.

if date :value "le" :originalzone "date" "date" "2018-10-25" {
        fileinto "SPAM";
        stop;
}

However, I get the following.

spam: line 41: error: unknown tagged argument ':value' for the date test
(reported only once at first occurrence).
spam: error: validation failed.
sievec(root): Fatal: failed to compile sieve script 'spam.sieve'

Does anyone have any advice on how to get this working?

Thank you.

Trever

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