Am 17.09.2020 um 23:46 schrieb Ángel via mailop
mailto:mailop@mailop.org>>:
On 2020-09-17 at 11:27 +0200, Thomas Walter wrote:
According to the UI headers, GMX thinks these are Schroedingers Spam
-
they are not, but they are?
[...]
X-Spam-Flag: NO
X-UI-Filterresults:
notjunk:1;V03:K0:Vf6iW93D
Hello,
One of my clients has an issue on Yahoo.
I sent a request to the postmaster and I get a first answer :
*Hello Isabelle,Thank you for contacting Yahoo Postmaster.If you receive an
SMTP error or bounced message containing "554 Message not allowed - [PH01]
Email not accepted for policy re
PH01 is typically phishing. I’d check all the links and websites in the message
to make sure there’s not a compromise somewhere.
My experience is that if Yahoo is telling you PH01, there’s a compromise /
virus being linked to from the message and you need to really dig into your
website securi
Mailbox provider Orange in France currently has issues with their
infrastructure. They reject incoming mail with:
421 # ID # ME Service refused. Please try again later. Service refused, please
try later. OFR_108; [108]
We were told that they are asking the senders to pause mailing to their doma
Hello Mailoppers,
I might have asked this before but I've been going round and round with
Microsoft tech support on SMTP basics. Microsoft has, no joke, been
working on answer this questions since June 30th. It's been a very bad
shotgun approach of sending random knowledge bases, doing screensha
You need to set up mail flow connectors in Exchange Online. Authentication is
certificate and/or IP based.
I think this explains it fairly well:
https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/use-connectors-to-configure-mail-flow/set-up-connectors-to-route-mail
Ken.
On 9/18/2020 10:18 AM, Ken O'Driscoll via mailop wrote:
> You need to set up mail flow connectors in Exchange Online.
> Authentication is certificate and/or IP based.
>
> I think this explains it fairly well:
> https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/use-connectors-to-co
On Fri, 18 Sep 2020, Kevin A. McGrail via mailop wrote:
Hello Mailoppers,
I might have asked this before but I've been going round and round with
Microsoft tech support on SMTP basics. Microsoft has, no joke, been
working on answer this questions since June 30th. It's been a very bad
shotgun ap
On 9/18/20 9:49 AM, Kevin A. McGrail via mailop wrote:
> On 9/18/2020 10:18 AM, Ken O'Driscoll via mailop wrote:
>> You need to set up mail flow connectors in Exchange Online. Authentication
>> is certificate and/or IP based.
>>
>> I think this explains it fairly well:
>> https://docs.microsoft.c
You can configure the connector to only relay messages to your MTA if its (CA
issued) cert's CN matches something specific. However, as you note, you also
need to trust their Exchange Online IP range too. Now those IPs are not the
same as their Azure allocations so the risk is the entire Exchang
On 9/18/2020 11:51 AM, Andrew C Aitchison via mailop wrote:
> As I say, I am not sure that any of this will directly help with your
> issue.
As you say, not directly because I'm worried about outbound not
inbound. However, this article [1] seems to back up the fact that they
turned off the capab
Coincidentally, this actually WORKS in Gmail / Google apps, though
they rate limit you pretty hard. It might be as low as 25 messages/day
for a new user when doing this using a Google account. (Rate limiting
might be a little less draconian for a paid Google apps/Google for
business account.) I've
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