The new watermarking feature in 4.62 - an unexpected side effect?

Martin.Hepworth martinh at
Fri Aug 3 08:57:02 IST 2007


I do hope OoO responders die, they are a PITA. A lot of people here have started to used them again (now I've made it easy to do - d'oh) and it caused at least 1 email storm from a bad list.

Personally I haven't used them for years - hmm lets see one of the senior IT guys is out, let attack the network...

Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

> -----Original Message-----
> From: mailscanner-bounces at [mailto:mailscanner-
> bounces at] On Behalf Of Quentin Campbell
> Sent: 03 August 2007 08:47
> To: MailScanner discussion
> Subject: The new watermarking feature in 4.62 - an unexpected side effect?
> Julian
> Am running 4.62.9-2 on 8 gateways with the new watermarking feature
> enabled.
> It has given rise to an increase in requests to "whitelist" addresses of
> messages that are being tagged.
> The messages in question have a blank 'From:' address following the "Our
> MailScanner believes that the attachment to this message sent to you..."
> rubric.
> On inspection these messages are almost always 'vacation' or OoO messages.
> It seems that there are good operational reasons for these sorts of auto
> responders to set the envelope-sender address to be null. However this
> causes them to be tagged as spam by MailScanner if watermarking is
> enabled.
> I don't consider it appropriate to whitelist addresses in this situation
> but they are 'genuine' messages nonethelees and may well be missed if
> people are filtering into a 'junk mail' folder on the tag. I can't see a
> way around this.
> I note, however, that JANET in its latest guidance on avoiding
> inappropriate e-mail bounces (April 2007) -
> - deprecate the use of
> vacation/OoO so perhaps we will see the use of OoO responders reduce in
> future?
> Quentin
> ---
> PHONE: +44 191 222 8209    Information Systems and Services (ISS),
>                            Newcastle University,
>                            Newcastle upon Tyne,
> FAX:   +44 191 222 8765    United Kingdom, NE1 7RU.
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