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I'm trying to send an email using mail -s "hello" emailaddress and I keep getting postfix error:
dsn=5.7.1, status=bounced (host gmail-smtp-in.l.google.com[173.194.206.27] said: 550-5.7.1 [213.122.175.146 1] Our system has detected an unusual rate of 550-5.7.1 unsolicited mail originating from your IP address. To protect our 550-5.7.1 users from spam, mail sent from your IP address has been blocked. 550-5.7.1 Please visit 550-5.7.1 https://support.google.com/mail/?p=UnsolicitedIPError to review our 550 5.7.1 Bulk Email Senders Guidelines. v6si1966184qtv.466 - gsmtp (in reply to end of DATA command))
or
something to do with PTR record.
Can someone help me please.
Rajesh Reddy
Posted 2018-01-10T11:38:08.320
Reputation: 1
I mean: i used cmd: echo kali | mail -s "kali" email. I followed the instructions of postfix install on ubuntu 16 – Rajesh Reddy – 2018-01-10T11:40:33.037
If you used that, big chances your don't have a valid FROM: address, which would result in Google blocking your email. For now, it seems your IP is blocked, so you can't retry anymore. It would be a good idea to investigate how SMTP, SPF and DKIM work before making another attempt. – mtak – 2018-01-10T12:31:28.017