Re: Opsdir last call review of draft-ietf-extra-sieve-fcc-08

Alexey Melnikov <> Wed, 09 January 2019 11:05 UTC

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From: Alexey Melnikov <>
To: Dan Romascanu <>,
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Date: Wed, 09 Jan 2019 11:05:13 +0000
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Subject: Re: Opsdir last call review of draft-ietf-extra-sieve-fcc-08
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Hi Dan,
Thank you for your review.

On Wed, Jan 9, 2019, at 9:30 AM, Dan Romascanu wrote:
> Reviewer: Dan Romascanu
> Review result: Has Issues
> The document extends the Sieve Email Filtering Language [RFC5228] by providing
> a number of action commands, some of which can generate additional messages of
> behalf of the user. It is a clear document, its target being developers and
> users of the protocol. I liked the fact that the authors included a
> 'Compatibility with Other Actions' section that describes the interoperability
> with existing deployed versions of the protocol, as well as the inclusion of a
> temporary section about Implementation Status. I am missing however some
> information about possible impact of the new action commands on deployment and
> operations on servers already in operation. I assume that scalability and
> compatibility between older and newer versions (including or not the new
> defined commands) were assessed, but this is not documented.

As :fcc is controlled by Sieve extension mechanism, Sieve scripts need to be updated before :fcc can be used. This means that either users need to manually update scripts and/or implementations that would use :fcc automatically need to be updated.
So older (nonextended) implementations are not affected by this extension.

Does this help or did I miss the point you are trying to convey?

Thank you,

> Some confirmation,
> warnings (if any) and useful information that operators should know at
> deployment would be useful. I suggest that you consider adding such a paragraph
> or short section.