I have a service in Postfix but now the messages are not being delivered checked the mail queued and find that Gmail and Hotmail is rejecting my deliveries and I have marked as SPAM, do not use my drop to send spam, just personal mailings.
That I can do to fix it?
1EC48449F0 2454124 Wed Jun 17 22:08:07 firstname.lastname@example.org (host mx2.hotmail.com[22.214.171.124] said: 550 SC-002 (SNT004-MC1F9) Unfortunately, messages from XXX.XXX.XXX.XXX weren’t sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. (in reply to MAIL FROM command))
115B544456 1620 Wed Jun 17 10:32:59 email@example.com (host aspmx.l.google.com[126.96.36.199] said: 550-5.7.1 [XXX.XXX.XXX.XXX] Our system has detected that this message is 550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail, 550-5.7.1 this message has been blocked. Please visit 550 5.7.1 https://support.google.com/mail/answer/188131 for more information. w53si5629300qge.37 - gsmtp (in reply to end of DATA command))
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