sysadmin:training
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sysadmin:training [2015/01/11 15:29] – [Applicazioni varie] kobe | sysadmin:training [2017/06/06 09:45] – feroda | ||
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- | ====== Training | + | ====== Training |
- | ===== DevOps | + | |
- | * http:// | + | ===== Verifica raggiungibilità host ===== |
- | ===== Mail ===== | + | Prima di tutto si deve verificare se si raggiunge il sistema remoto. |
+ | Si può fare con il programma `ping <nome host o indirizzo IP>` | ||
- | | + | Il ping può essere utile per verificare anche la latenza di rete |
- | * OpenDKIM: | + | |
- | * http://www.opendkim.org/opendkim-README | + | |
- | * https:// | + | ===== Verifica raggiungibilità di un servizio ===== |
+ | |||
+ | |||
+ | ==== Esempio HTTP ==== | ||
+ | |||
+ | TODO Costin | ||
+ | |||
+ | ==== Esempio SSH ==== | ||
+ | |||
+ | TODO Costin | ||
+ | |||
+ | ==== Esempio SMTP (invio email) ==== | ||
+ | |||
+ | TODO Costin | ||
+ | |||
+ | |||
+ | ===== SMTP (avanzato) ===== | ||
+ | |||
+ | Da non leggere se non si è già amministratori di un server email. | ||
+ | |||
+ | ==== SMTP configuration ==== | ||
+ | |||
+ | In order to have a working SMTP server we have to take care of " | ||
+ | |||
+ | * PTR reverse DNS record: '' | ||
+ | * DNS: | ||
+ | * MX -> who exchange the mail for the domain? | ||
+ | * SPF -> which addresses can be originated from the MX? | ||
+ | * DKIM -> how are signed messages outgoing from the MX? | ||
+ | * DMARC -> what actions do you suggest to mail receivers' | ||
+ | |||
+ | * Furthermore we need working antispam and antivirus | ||
+ | * And of course SMTP server only relay local or TLS + authenticated connections | ||
+ | * Need to add DNS entries to the host that receives DMARC reports if domain is different from the one of the DMARC itself | ||
+ | |||
+ | === References === | ||
+ | |||
+ | * https:// | ||
+ | | ||
+ | * https:// | ||
+ | * DKIM on STMP RELAY server (trust hosts...) | ||
+ | |||
+ | === SMTP/IMAPs tests === | ||
+ | |||
+ | | ||
+ | * SPF, DKIM, Antispam: http:// | ||
+ | * DMARC: https:// | ||
+ | * IMAPs: http:// | ||
+ | * SMTP: https:// | ||
+ | * SMTPs: https:// | ||
sysadmin/training.txt · Last modified: 2021/02/03 17:42 by feroda