- Faulty configuration
- Dispatcher ISP denies to send the email
- Recipient ISP denies reception of the email
The most comfortable way to show the log file is using the Console.app.
- Open Console.app
- Choose View -> Show Log List
- Open the folder "FILES" in the Log List
- Open the folder "/private/var/log"
- Click the mail.log entry in the Log List
- On the right side of the window you can see the content of the Postfix log file.
- Open the Terminal.app (Applications/Utilities)
- Enter the following prompt and hit Enter
tail -f /private/var/log/mail.log - You can now read the Postfix log file within the Terminal. The log file keeps updating as new entries apply.
- Press "Ctrl + c" to stop the process
- Open the Terminal.app (Applications/Utilities)
- Enter the following and hit Enter
defaults write com.apple.finder AppleShowAllFiles -boolean true - Restart the Finder by enter the following and hit Enter
Killall Finder - Open the file "/private/var/log/mail.log" with your editor.
