After the update:
Updating:
courier-imap-toaster x86_64 4.1.2-1.3.15.mr.el6 mratwork-release-version-arch 839 k
qmail-pop3d-toaster x86_64 1.03-1.3.37.mr.el6 mratwork-release-version-arch 37 k
qmail-toaster x86_64 1.03-1.3.37.mr.el6 mratwork-release-version-arch 691 k
You can not send emails.
It is this error:
SMTP< 553 sorry, your envelope sender has been denied (#5.7.1)