I have a problem with send and receive email.
- I installed Zimbra mail server 8.0.6 in Ubuntu Server 12.04, and i create 2 account zimbrauser1, zimbrauser2
- I use gmail,hotmail,...to send to zimbrauser1 or zimbrauser2 --> ok
- but when i used zimbrauser1 or zimbrauser2 to send to gmail or hotmail it's not working.
when i send to gmail Undelivered Mail Returned to Sender
host gmail-smtp-in.l.google.com[18.104.22.168] said:
550-5.7.1 [*.*.*.*] The IP you're using to send mail is not
authorized to 550-5.7.1 send email directly to our servers. Please use the
SMTP relay at your 550-5.7.1 service provider instead. Learn more at 550
ek3si4900723pbd.235 - gsmtp (in reply to end of DATA command)