[mikrotik] ddns update

mikrotik

### set email by cli
/tool e-mail
set address=74.125.131.108  ### smtp.gmail.com
set port=587
set [email protected]
set user=gmail_user
set password=gmail_password

### test email
send [email protected] subject="email test" body="email test" start-tls=yes

### script
:global ddnshostname "@"
:global ddnsdomain "domain.tld"
:global ddnspass "your_password"

:log info ("DDNS: Updating")
:local str "https://dynamicdns.park-your-domain.com/update\3Fhost=$ddnshostname&domain=$ddnsdomain&password=$ddnspass"
:local IP [:resolve "your_domain"];
/tool fetch url=($str) mode=https keep-result=no

/tool e-mail send to="[email protected]" subject="your_domain" body="Your IP: $IP" start-tls=yes