i followed a this tutorial for relay external ..... and now my mail is not delivered to yahoo but works with gmail and hotmail.
How do i reverse the changes i just made?
Some mailservers require to use their smtp server.
Set first in the admin console the smtp server: Servers > MTA > Relay MTA
For this setup, edit the postfix.cf file:
change the relayhost directive
For Shaw customers, change the DS line to read:
relayhost = shawmail.cg.shawcable.net
For Telus customers, change the DS line to read:
relayhost = mail.telus.net
If you need to login with your mail account:
echo mailrelay.example.com user:password > /opt/zimbra/conf/relay_password
1. Generate the Password database from the file
1. Test that the correct username/password pair is returned when calling the script
postmap -q mailrelay.example.com /opt/zimbra/conf/relay_password
postconf -e smtp_sasl_password_maps=hash:/opt/zimbra/conf/relay_password