Attention: Mike Wise and Terry Zink
On a recent email, we noticed an email of our client had a pink banner
stating "This might be a phishing message and is potentially unsafe".
When researching what might be causing this, what we found strange is that
the the Microsoft Anti-Spam header stated the
Thanks all, I suspect that the problem in this instance is with Cloudmark
filtering but it would be good to confirm either way.
@Geoff, I'll drop you an email shortly.
@Ewald, the abuse desk have indeed responded quickly but we've never got
further than an initial response saying that they'd ad
If you use a counter-based bounce processing system that eventually
invalidates repeatedly 5xx bouncing recipients, I wouldn't exclude 5.7.1
response codes from that process. If your sending client isn't actively
addressing the issue and working with you to get the block removed, then
continuing to
Dale,
I have some contacts in the IoT group at KPN. I don't know if they
can help but I can put you in touch...
Geoff
On 12/11/2017 07:02 AM, Dale Langley via mailop wrote:
Hi all,
We're struggling to get a response from KPN on some issues delivering email to
their network (doma
I would not say exclusively. Code 5.7.1 is also used for “Relay access denied”
for example. This bounce is often caused by typo domains that end up at a
default MX. From my experience, it is better to match a bounce category first
on the text, and then on the status code.
For the actions, I agr
5.7.1 codes are used exclusively for policy blocks (IP blacklisted, content
deemed spammy etc).
Gmail uses it for DMARC rejections.
Hotmail also uses 5.7.1 when an IP is outright blocked.
This type of bounce confuses me a little. It certainly shouldn't be used to
mark the recipient as invalid, a
People at KPN Abuse Team (ab...@kpn.com) respond rather quickly to
inquiries. But, as they rely on third party spam filtering, actual
solutions might take some time.
Regards,
Ewald
--
Deliverability & Abuse Management, www.webpower-group.com
ewald.kess...@webpower.nl
t: +31 342 423 262
On 11 De
Hi all,
We're struggling to get a response from KPN on some issues delivering email to
their network (domains: planet.nl, kpnmail.nl, telfort.nl, hetnet.nl,
kpnplanet.nl, wxs.nl, tiscali.nl). Does anyone have any contact info (or tips)
they'd be willing to share?
Thanks,
Dale
Head of De
