Issue Change default email sender

[ccarmona]

Hello,

First of all, sorry for my english.

I have Plesk 12.5.30 with Centos 6.5 and postfix.

I updated Plesk recently from version 11.0.9 to 12.5.30. Before this update, when I send any mail the default sender was "[email protected]" (server1.mydomain.com is the hostname defined in Plesk). After the update, the default sender is "[email protected]" and I want like before.

How can I set the sender domain as before the update?

Thank you.