Postfix Sender Canonical Rewriting appears broken

[nzkiwi68]

I get this logged;

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postfix/cleanup[25132]: warning: regexp map /usr/local/etc/postfix/sendercanonical, line 1: ignoring unrecognized request

I'm trying to use Sender Canonical Rewriting because a basic alarm panel that is sending email, set the FROM email address as the same as the sending TO email address and you can't change it.

So, I have a simple setting in Sender Canonical Rewriting.

123456789@sms.gateway.com          user@mydomain.com

It just doesn't seem to work.

Any ideas?

[nzkiwi68]

I just tried .* as the pattern match and I get this in the postfix log

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postfix/cleanup[17182]: warning: regexp map /usr/local/etc/postfix/sendercanonical, line 1: unknown regexp option "c": skipping this rule

[mimugmail]

Can you recheck with this:
https://github.com/opnsense/plugins/pull/1406#issuecomment-518566685

[nzkiwi68]

Thanks. That's good, it now works.
In that case, can I recommend the help text is updated;

Services > Postfix > Sender Canonical Rewriting > Rewrite From

Altered to;

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Pattern matching (inside the quotes) e.g. match all "/.+/"  match a domain "/@domain\.com/i" match a user "/username/i"