linux:emailserver:courier
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linux:emailserver:courier [2017/01/22 12:49] tkilla |
linux:emailserver:courier [2018/02/01 02:09] tkilla |
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| + | **better scripts:** https:// | ||
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| generate, check and activate aliases: | generate, check and activate aliases: | ||
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| ===== config tricks ===== | ===== config tricks ===== | ||
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| + | ===== SSL Certificates ===== | ||
| + | |||
| + | ...tricky! | ||
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| + | All config files use these two variables, so I set them to the same cert files in all configs: | ||
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| + | Private Key and Cert and intermediate-cert and root-cert(s) combined in one file. The order is unclear. I had the private key first for many years, but documentations speak about putting the cert first: | ||
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| + | cat myserver.example.com.key myserver.example.com.crt [intermediate.crt] > myserver.example.com.pem | ||
| + | | ||
| + | |||
| + | TLS_CERTFILE=/ | ||
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| + | This contains the intermidiate-certs - i use the ca-bundle provided by the vert dealer | ||
| + | This seems to be only used by eSMTP - IMAP and POP works without it | ||
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| + | TLS_TRUSTCERTS=/ | ||
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| + | Checks: | ||
| + | openssl s_client -starttls imap -connect myserver.example.com: | ||
| + | https:// | ||
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| + | SMTP-Error after cert install: "no cipher suites found": | ||
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| - abuse@domain alias einrichten | - abuse@domain alias einrichten | ||
| - **check blacklists!** | - **check blacklists!** | ||
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| + | ==== 556 Address unavailable error ==== | ||
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| + | There have been too many errors sending to this local address, so courier disables it for 2 hours to avoid backscatter. | ||
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| + | This should show (all) 556 blocked addresses, but does not work: | ||
| + | courier show all | < | ||
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| + | This releases the lock, so the address becomes available (maybe restart courier): | ||
| + | courier clear all | < | ||
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| + | ==== Plugins ==== | ||
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| + | Some useful Plugins and Settings: | ||
| + | https:// | ||
| + | We use these: | ||
| + | * RelayCountry | ||
| + | * local DNS Resolver to avoid getting blacklisted by blacklists for too many DNS queries | ||
linux/emailserver/courier.txt ยท Last modified: 2018/04/03 15:27 by tkilla
