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
> 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
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
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
On Tue, Sep 14, 2021 at 01:20:03PM +1000, raf wrote:
> On Mon, Sep 13, 2021 at 11:07:27AM +0200, Max-Julian Pogner
> wrote:
>
> > Hi there,
> >
> > 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 em
On Mon, Sep 13, 2021 at 11:07:27AM +0200, Max-Julian Pogner
wrote:
> Hi there,
>
> 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?
>
> i actually know th
On Mon, Sep 13, 2021 at 07:58:26AM -0400, Wietse Venema wrote:
> > 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?
>
> It just seems unlikely that major
Max-Julian Pogner:
> Hi there,
>
> 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?
It just seems unlikely that major email service providers would run
all
I would hazard a guess that the client connects to the first IP from the
RRset his cashing DNS resolver gives him (since mail clients AFAIK do
not have in-built DNS resolver functionality. How is the resource record
set ordered depends on setting on the server, usually (though the DNS
client co
On 11/30/2012 01:28 AM, Wietse Venema wrote:
WebprodsPT:
Hello,
I am the administrator of a Postfix setup with multiple domains,
multiple IP addresses and SSL configured and up and running. Everything
was configured by myself and I have no restrictions on the mail server
machine so basically I
WebprodsPT:
> Hello,
>
> I am the administrator of a Postfix setup with multiple domains,
> multiple IP addresses and SSL configured and up and running. Everything
> was configured by myself and I have no restrictions on the mail server
> machine so basically I can do whatever you suggest.
>
>
Kirill Bychkov:
> Thank you for advice.
>
> But the more I read the docs, the more I do not understand this feature.
> Sorry.
>
> In my case, postfix-in and postfix-out is one instance.
> I already have 2 postfix with identical configuration on separate servers.
> I need to create +5 or more post
Thank you for advice.
But the more I read the docs, the more I do not understand this feature.
Sorry.
In my case, postfix-in and postfix-out is one instance.
I already have 2 postfix with identical configuration on separate servers.
I need to create +5 or more postfix servers with same identical
On 05/03/2012 07:45 AM, Kirill Bychkov wrote:
> Hi all,
>
> I need create server with 5 IP addresses (interfaces) and postfix(es).
> The role of this server is relay.
> If message delivered into my mail server on one ip address, for example,
> 172.16.35.35, so this message should be sent from same
* Kirill Bychkov :
> Hi all,
>
> I need create server with 5 IP addresses (interfaces) and postfix(es). The
> role of this server is relay.
> If message delivered into my mail server on one ip address, for example,
> 172.16.35.35, so this message should be sent from same ip: 172.16.35.35.
> In oth
On Tue, Oct 21, 2008 at 10:58:21PM +1100, Barney Desmond wrote:
> Oh, it's also meant to be high-performance, something I've done some
> testing on but haven't yet completed.
Comparisons are only fair if it actually takes the trouble to make mail
delivery *reliable* by calling fsync() to commit q
Erbil KARAMAN:
>> actually 'letting MTA figure out how to get it to the internet' is not
>> a great approach for high volume senders.
I meant just in terms of letting the primary postfix instance figure out
which other postfix instance to pass it to. It's a good generalised
solution that doesn't
Erbil KARAMAN:
> actually 'letting MTA figure out how to get it to the internet' is not
> a great approach for high volume senders. there are lots of parameters
> you want to control 'logically' that no MTA out there supports. If you
> compare the config options of powerMTA and postfix you will see
actually 'letting MTA figure out how to get it to the internet' is not
a great approach for high volume senders. there are lots of parameters
you want to control 'logically' that no MTA out there supports. If you
compare the config options of powerMTA and postfix you will see how
they differ as a d
mouss wrote:
> use multiple instances: run postfix 8 times, each with its own config
> dir, queue dir, data dir, ... etc, and configure each for its own
> domain(s).
This is something we've run into at work. One customer already uses
PowerMTA, and there's another we'd like to discourage. We figur
Erbil KARAMAN a écrit :
> hi,
>
> i have been working on different configuration combinations for hours
> but couldn't be able to succeed with anything..
>
> here is what i'm trying to do...
> i have 8 different IP addresses configured on my linux machine.
>
> i want them all behave like a virtu
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