[REQUEST] Block customers from entering @gmail.com as Cron result e-mail

[Spacedust]

This is really important. We've found Google is blocking such e-mails which will cause whole server IP to be marked as spammer so all e-mails goes to SPAM !

May 27 23:55:16 onlinexxx send: 1401227716.920202 delivery 10128: deferral: User_and_password_not_set,_continuing_without_authentication./<xxx@gmail.com>_173.194.67.26_failed_after_I_sent_the_message./Remote_host_said:_421-4.7.0_[144.76.123.xx______15]_Our_system_has_detected_an_unusual_rate_of/421-4.7.0_unsolicited_mail_originating_from_your_IP_address._To_protect_our/421-4.7.0_users_from_spam,_mail_sent_from_your_IP_address_has_been_temporarily/421-4.7.0_rate_limited._Please_visit/421-4.7.0_http://www.google.com/mail/help/bulk_mail.html_to_review_our_Bulk/421_4.7.0_Email_Senders_Guidelines._c1si9246702wix.69_-_gsmtp/

[Spacedust]

Mustafa please add this !

[Spacedust]

Mustafa - this is really urgent. Currently customers can add anything in this field even wrong e-mail addresses.