More typo fixes and improve ports example at POP3 docs (#2128)

Co-authored-by: Casper <casperklein@users.noreply.github.com>
Co-authored-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>
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William Desportes 2021-08-13 10:33:10 +02:00 committed by GitHub
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---
If you want to use POP3(S), you have to add the ports 110 and/or 995 (TLS secured) and the environment variable `ENABLE_POP3` to your `docker-compose.yml`:
If you want to use POP3(S), you have to add the ports 110 and/or 995 (TLS secured) and the environment variable `ENABLE_POP3` to your `docker-compose.yml`:
```yaml
mail:
mailserver:
ports:
- "25:25"
- "143:143"
- "587:587"
- "993:993"
- "110:110"
- "995:995"
- "25:25" # SMTP (explicit TLS => STARTTLS)
- "143:143" # IMAP4 (explicit TLS => STARTTLS)
- "465:465" # ESMTP (implicit TLS)
- "587:587" # ESMTP (explicit TLS => STARTTLS)
- "993:993" # IMAP4 (implicit TLS)
- "110:110" # POP3
- "995:995" # POP3 (with TLS)
environment:
- ENABLE_POP3=1
```