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Your e-mail server is trying to connect to gmail over IPv6. According to the error message, you have no PTR record for IPv6 pointing to your server. If you can create PTR records yourself, you should do that. If you can't, you'll have to ask your server provider. An example PTR record is this: ...


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Ohh my bad. My receiving address has blocked this email and that's why it is not working.


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The way GMX documents it, you have to use port 465 with SSL - you are using it with TLS, which should use port 587. So either change your port or your protocol, both should work. Also, as an anti-spam measure, GMX only accepts messages from a valid GMX sender - no stuff like root@mymachine.local or similar. What works is if you send a mail via ...


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I was creating a localhost only environment to test email sending during development and faced this error message. The reason was: my user spool mail file was really empty. To solve it, I just composed an email to myself and clicked on Get Messages. Spool created and problem solved!


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Your script looks ok. You should add exit 0 / exit 1, for failure / success .. more info below. and it will be checked with every 20 minutes If the script should run always, each 20 minutes in the background, you should use cron, which is already available on your system. Like that all output of your script will be mailed to root, if the script ...


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Use a while loop with read to get each IP address and then use ping: #!/bin/bash while IFS= read -r ip; do if ping -q -c2 "$ip" &>/dev/null; then echo "$ip is Pingable" else echo "$i Not Pingable" fi done <"$HOME"/iplist.txt


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What you want to do is not possible. You need an open port 25. Port 587 is the "submission" port, it is used only by end-users wishing to send e-mail through an external SMTP server. After that, when two servers are communicating with each other to transmit a message to its destination, only port 25 is used.



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