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Re: reverse proxy SMTP - How distinguish MUA and MTA

Rainer Duffner
June 04, 2015 03:42PM
> Am 04.06.2015 um 20:13 schrieb dethegeek <nginx-forum@nginx.us>:
>
> Hi
>
> Still building a nginx reverse proxy for my mail servers. Thanks to the
> community, I now have a secure connection between nginx and my backend mail
> server.
>
> POP and IMAP are working well, from a MUA to my server.
>
> I'm wondering how nginx can manage SMTP coonnections as it is used by both
> MUA and MTA.
>
> A MUA must authenticate before sending mails; and my http_auth backend is
> able to authenticate users. More precisely, the authentication backend
> answers a server (auth-server / auth-port) depending on the domain of the
> destination email address.
>
> Now I guess I have to accept incoming emails without authentication if the
> client is a MTA, but I don't find a obvious way to distingish a MUA and a
> MTA and let mu auth backend behave depending on that.
>
> How to achieve that ?
>



MUA = Port 587 + 465
MTA = Port 25

Maybe use something like Haraka for SMTP?
It’s supposed to be for SMTP-servers what NGINX is for Webservers ;-)




Rainer
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Subject Author Posted

reverse proxy SMTP - How distinguish MUA and MTA

dethegeek June 04, 2015 02:13PM

Re: reverse proxy SMTP - How distinguish MUA and MTA

Rainer Duffner June 04, 2015 03:42PM

Re: reverse proxy SMTP - How distinguish MUA and MTA

dethegeek June 04, 2015 03:47PM



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