On 2024-01-14 15:28, Alexander Huynh via mailop wrote:
From a spam point of view, signing up for a domain is a barrier of
entry which some may consider too much trouble.
This may play into why there's a larger distribution of unwanted mail
on the freely-provided `*.onmicrosoft.com`
On 2024-01-19 at 07:03:35 UTC-0500 (Fri, 19 Jan 2024 12:03:35 +)
Simon Arlott via mailop
is rumored to have said:
On 19/01/2024 00:33, Randolf Richardson, Postmaster via mailop wrote:
The blacklists seem to be blocking mostly the ones that send
directly from @.onmicrosoft.com
> On Wed, 17 Jan 2024 15:35:42 +0100, Hans-Martin Mosner via mailop
> wrote:
>
> >Am 17.01.24 um 15:20 schrieb Paul Menzel via mailop:
> >> With this in mind, did somebody compile a block list yet? Or should I just
> >> create a whitelist?
> >
> >A block list does not make sense, as new
> On 19/01/2024 00:33, Randolf Richardson, Postmaster via mailop wrote:
> > The blacklists seem to be blocking mostly the ones that send
> > directly from @.onmicrosoft.com addresses, which
> > should make filtering easy if we can confirm for certain that no
> > legitimate eMail has these
On 19/01/2024 00:33, Randolf Richardson, Postmaster via mailop wrote:
> The blacklists seem to be blocking mostly the ones that send
> directly from @.onmicrosoft.com addresses, which
> should make filtering easy if we can confirm for certain that no
> legitimate eMail has these as the
es With Mission-Critical Email Needs
>
> - Original Message -
> From: "Hans-Martin Mosner via mailop"
> To: "mailop"
> Sent: Thursday, January 18, 2024 5:13:30 PM
> Subject: Re: [mailop] Anyone else noticing an increase in spam from Office365
>
On Wed, 17 Jan 2024 15:35:42 +0100, Hans-Martin Mosner via mailop
wrote:
>Am 17.01.24 um 15:20 schrieb Paul Menzel via mailop:
>> With this in mind, did somebody compile a block list yet? Or should I just
>> create a whitelist?
>
>A block list does not make sense, as new domains are added
With Mission-Critical Email Needs
- Original Message -
From: "Hans-Martin Mosner via mailop"
To: "mailop"
Sent: Thursday, January 18, 2024 5:13:30 PM
Subject: Re: [mailop] Anyone else noticing an increase in spam from Office365
distribution lists?
Am 17.01.24 um 15:35 schrie
Am 17.01.24 um 15:35 schrieb Hans-Martin Mosner via mailop:
Am 17.01.24 um 15:20 schrieb Paul Menzel via mailop:
With this in mind, did somebody compile a block list yet? Or should I just create a whitelist?
A block list does not make sense, as new domains are added continuously. It's
just
On Wed, Jan 17, 2024 at 20:13:13 +, L. Mark Stone via mailop wrote:
> Nonetheless, to be conservative, we've taken to blocking just
> @onmicrosoft.com emails for the moment (no subdomains).
It's strange you'd see anything from @onmicrosoft.com at all, as the
domain itself has no MX nor A or
Seen some weird tenant.onmicrosoft.com in delivery/read receipts in from
headers so that I believe Microsoft is using the domain itself for send/receive
functionality inside exchange tenant config
Colin
Sent from my iPod
> On 17 Jan 2024, at 14:28, Paul Menzel via mailop wrote:
>
Am 17.01.24 um 15:20 schrieb Paul Menzel via mailop:
With this in mind, did somebody compile a block list yet? Or should I just create a whitelist?
A block list does not make sense, as new domains are added continuously. It's
just too simple.
I've had good experience with a whitelist, but
t direction since
> > >
> > > I'm seeing
> > >
> > > zero legitimate eMail coming from hosts self-identifying as hosts in
> > >
> > >
> > >
> > > the "azurewebsites.net [1]" domain name in the HELO and EHLO
> > >
>
mailop.org>>
> To: "Andrew C Aitchison" mailto:and...@aitchison.me.uk>>
> Cc: "mailop" mailto:mailop@mailop.org>>
> Sent: Sunday, January 14, 2024 6:30:22 PM
> Subject: Re: [mailop] Anyone else noticing an increase in spam
from Off
ne, Founder
North America's Leading Zimbra VAR/BSP/Training Partner
For Companies With Mission-Critical Email Needs
- Original Message -
From: "Mark Alley via mailop"
To: "Andrew C Aitchison"
Cc: "mailop"
Sent: Sunday, January 14, 2024 6:30:22 PM
Subject: Re
___
> > L. Mark Stone, Founder
> > North America's Leading Zimbra VAR/BSP/Training Partner
> > For Companies With Mission-Critical Email Needs
> >
> > ----- Original Message -----
> > From: "Mark Alley via mailop"
Cc: "mailop"
> Sent: Sunday, January 14, 2024 6:30:22 PM
> Subject: Re: [mailop] Anyone else noticing an increase in spam from Office365
> distribution lists?
>
>
>
> Ah, yep, thanks for catching that typo.
> On 1/14/2024 4:56 PM, Andrew C Aitchison
th America's Leading Zimbra VAR/BSP/Training Partner
For Companies With Mission-Critical Email Needs
- Original Message -
From: "Mark Alley via mailop"
To: "Andrew C Aitchison"
Cc: "mailop"
Sent: Sunday, January 14, 2024 6:30:22 PM
Subject: Re: [mai
Ah, yep, thanks for catching that typo.
On 1/14/2024 4:56 PM, Andrew C Aitchison wrote:
On Sun, 14 Jan 2024, Mark Alley via mailop wrote:
This is anecdotal, but I think it illustrates even at a smaller scale
the persistent problem Microsoft currently has with their tenancy.
I did some quick
On Sun, 14 Jan 2024, Mark Alley via mailop wrote:
This is anecdotal, but I think it illustrates even at a
smaller scale the persistent problem Microsoft currently has
with their tenancy.
I did some quick perusal of the last month's data from our
email logs, and out of a total of 22,473
This is anecdotal, but I think it illustrates even at a smaller scale
the persistent problem Microsoft currently has with their tenancy.
I did some quick perusal of the last month's data from our email logs,
and out of a total of 22,473 external emails that contain a
.onmicrosoft.com
From a spam point of view, signing up for a domain is a barrier of entry
which some may consider too much trouble.
This may play into why there's a larger distribution of unwanted mail on
the freely-provided `*.onmicrosoft.com` subdomains.
--
Alex
According to Microsoft, they use the "onmicrosoft.com" domain name
for providing IMAP4 access, and as an SMTP fallback domain for
clients who don't have their own domain name:
Source:
It appears that Russell Clemings via mailop said:
>"You can keep using the initial onmicrosoft.com domain even after you add
>your domain. It still works for email and other services, so it's your
>choice."
>
>... or am I misunderstanding?
>
>I'm tempted to block *. onmicrosoft.com completely but
You can, yes. But would anyone trust it?
I wouldn't.
Graeme
On 14 January 2024 17:49:36 Russell Clemings via mailop
wrote:
But
https://learn.microsoft.com/en-us/microsoft-365/admin/setup/domains-faq?view=o365-worldwide
says:
"You can keep using the initial onmicrosoft.com domain even
But
https://learn.microsoft.com/en-us/microsoft-365/admin/setup/domains-faq?view=o365-worldwide
says:
"You can keep using the initial onmicrosoft.com domain even after you add
your domain. It still works for email and other services, so it's your
choice."
... or am I misunderstanding?
I'm
On 13 January 2024 14:07:46 "L. Mark Stone via mailop"
wrote:
Is there a list of "legitimate" subdomains of onmicrosoft.com somewhere
that we can leverage?
Wearing my "I have to administer a Microsoft 365 tenancy" hat - no.
However, your mention of best practice is bang on. The subdomains of
27 matches
Mail list logo
