On Tue, Sep 14, 2021 at 08:24:00AM +0100, Nick Howitt
wrote:
> On 14/09/2021 04:29, raf wrote:
> >
> > On Tue, Sep 14, 2021 at 01:20:03PM +1000, raf wrote:
> >
>
> >
> > But chances are that mail clients just do what any
> > other TCP client would do. That might be why you can't
> > find an
Hi,
this is my first project written in Go. It is a Postfix policy service that can
help reject compromised sender accounts. Therefor it takes the sender IP and
gets its geo location ISO code. If a sender comes from too many countries, the
request is rejected. A second feature is to count the n
> when a user clicks "send", the email client has to make some tcp-connection
> to some ip address.
> what if the hostname configured at the email client resolves to multiple ip
> addresses?
There are several hops that could randomize ips:
- authoritative dns server
- dns resolver at your di
> Am 14.09.2021 um 09:44 schrieb Ken Peng :
>
> If my email provider has taken your policy, I will be denied by them since I
> always was using the VPN to access the internet.
> Almost every well known VPN (pureVPN, keepsolid etc) has a large range of IPs
> for their users, and these IPs are
If you are only
interested in what mail clients do, and can't find any
online explanation, you could either look at the source
code to some open source ones (probably the easiest
way),
to me, this feels rather the most troublesome way :-)
or set up a mail smarthost with multiple IP
address
If my email provider has taken your policy, I will be denied by them since
I always was using the VPN to access the internet.
Almost every well known VPN (pureVPN, keepsolid etc) has a large range of
IPs for their users, and these IPs are in different countries.
regards.
On Tue, Sep 14, 2021 at 3
On 14/09/2021 04:29, raf wrote:
On Tue, Sep 14, 2021 at 01:20:03PM +1000, raf wrote:
But chances are that mail clients just do what any
other TCP client would do. That might be why you can't
find any discussion on the topic. Remember, the only IP
address(es) that the mail client will be co
