[anti-abuse-wg] Mimecast.com

First - I have a great amount of respect for Nat - he was a colleague at IBM (where he used to be for years) before he left to join Mimecast.

That said - I am going to ask him to have someone investigate any email you have sent mime cast, and why it bounced - or whether there is an unfiltered alias you can resend your email to.

> On 04-Nov-2015, at 1:59 PM, andre at ox.co.za wrote:
> 
> On Wed, 4 Nov 2015 13:48:51 +0530
> Suresh Ramasubramanian <ops.lists at gmail.com> wrote:
>> Mimecast’s chief scientist is Nathaniel Borenstein - who originally
>> wrote the MIME spec.
>> They are legit.  I am not sure what is going on here.
>> 
> thank you for the reference Mr Ramasubramanian, would you do me the
> kind favor of asking them:
> why they are blocking @188.40.114.80 - which is also the ip used to
> send emails to this list. - and then maybe tell us, in public what is
> going on?
> 
> If they are not extorting money, then I surely must have abused them or
> their users? Or their system is broken, or what?
> 
> but i think that they may not bee that legit? or they have changed their
> corporate goals? or there are new management, or something?
> 
> Just from what you can see here:
> https://community.mimecast.com/docs/DOC-1369#554
> 
> then they are bouncing with 554 to support@
> 
> that is clearly not legit.
> 
> or it is a serious flaw/broken system?
> 
> they could bounce of course any way they like, but bouncing
> with something that is going to return is basically saying only one
> thing - there is no way to communicate with them, as when I
> do that is simply added to their block... 
> 
> that is not cool, nice, decent or even fair bahavior?
> 
> andre
> 
>>> On 04-Nov-2015, at 1:14 PM, andre at ox.co.za wrote:
>>> 
>>> Hello,
>>> 
>>> Has anyone of you had much/any dealings with this crowd:
>>> Mimecast.com ?
>>> 
>>> Less than 1% of our email volume exchanges with them, and yesterday
>>> after complaining about abuse/UBE from them and receiving no
>>> response, escalated to @telstra and then all of a sudden they are
>>> returning all email in a loop:
>>> 
>>> support at mimecast.com
>>>   host service-alpha-inbound-b.mimecast.com [91.220.42.231]
>>>   SMTP error from remote mail server after end of data:
>>>   554 Email rejected due to security policies -
>>>   https://community.mimecast.com/docs/DOC-1369#554
>>> 
>>> Then, when I email them from a different server, it goes through the
>>> first time and viola, the second email, same block, on the "new"
>>> server"
>>> 
>>> From their website: They provide email filtering services, this
>>> feels like they are extorting money from me, which I will not pay
>>> of course.
>>> 
>>> But, have any of you had any similar experiences? As they are
>>> providing this type of "service" to some of our @gov departments
>>> as well as other large companies, I will have user blowback - what
>>> do I tell my users? We are blocked because we dared complaining? 
>>> or we are blocked because we do not pay?
>>> 
>>> any advice will be appreciated, obviously this type of behavior
>>> breaks email and the larger the "protectors" become, the more
>>> control they have...
>>> 
>>> tia
>>> 
>>> andre 
>>> 
>>> 
>> 
> 
>