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Updated A mail server's 101 (markdown)

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Jean-Denis Vauguet 2020-06-12 08:08:16 +02:00
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docs/content/a-mail-server's-101.md
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@ -44,17 +44,7 @@ Fetching an email: MUA <------------------------------ ┫ MDA ╯ ┃
┗━━━━━━━┛ ┗━━━━━━━┛
``` ```
In its simplest use-case, docker-mailserver will handle direct email trafic bound to a specific hostname: a MUA establishes a direct connection to docker-mailserver's MTA, authenticates and submits an email. Thus our schema could be further simplified to look like this: > Of course the MUA and docker-mailserver's MTA are likely to be located in distant places (network-wise), so don't expect a _direct_ connection between MUAs and your mail server. It is very likely email trafic will hop through several relays: some will be TCP servers, some will be MTAs. MUA only has control over the first "hop", and that will prove important when it comes to securing email trafic.
```txt
docker-mailserver is here:
┏━━━━━━━┓
Sending an email: MUA ---> ┫ MTA ╮ ┃
Fetching an email: MUA <--- ┫ MDA ╯ ┃
┗━━━━━━━┛
```
> Of course the MUA and docker-mailserver's MTA may be located in distant (network-wise) places, so don't expect a _direct_ connection between MUAs and your mail server. It is very likely email trafic will hop through several relaying TCP servers-but those will not be MTA servers, so are irrelevant here.
One important thing to note is that MTA and MDA programs may actually handle _multiple_ tasks (which is the case with docker-mailserver's Postfix and Dovecot). One important thing to note is that MTA and MDA programs may actually handle _multiple_ tasks (which is the case with docker-mailserver's Postfix and Dovecot).