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Postfix邮件服务器拒绝来自外部邮件服务器的连接

我有一个SMTP监听端口587的Postfix服务器,外部邮件服务器(如Gmail)无法访问这些服务器,因此从GMail发送电子邮件到[email protected]时收到此邮件传递失败: 收件人服务器不接受我们的连接请求。 请通过以下url了解详情: https : //support.google.com/mail/answer/7720 [mail.mydomain.tld MailServerIP:( 有趣的是这里没有端口!) socket error] —– Original message —– DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=pEP+FUpQu4YrUIJfRtRY72qvieH+prFPrjpP+XncC+A=; b=xWURH+CuLyCB2dCkDZTmlncHMmvAaP24KwgoqUxur1FxRye7cJ4qAHYDjEQLGoecJO U3ka/qkBSwcDnCsrBZc+I4YL7sN6pRJvBatv/EXbYdwoczq8LoizXWuYKxprCgSiVKu5 3eFdaFN8dCBXJncp4mMMOzKwonqe1fO+zuV5fI3ef7TCgThEBiCwZrEFUlPb64MCkQzY wKu/gwKVS5yvO2MvD3IJQJeqmaj2kegC9zIIQo5w9w/HeS4wasyVU9bIAAuCG9azdiL6 wR9CzV95xHJYWv/3YUcB0CBMuL7vrelDlVlRddhrhJRV4jkzOHOYlgvDVhd0GPj7/Mib KqOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=pEP+FUpQu4YrUIJfRtRY72qvieH+prFPrjpP+XncC+A=; b=lSA5HbBTMeKoIOp7/ZuktmhmO67v/oN4gAlk6kJDlPj2ue9yCDx8s0IdBlF4QENiae HQqug+EqwxQItawgwYO8ZGmQDs1nPPjxLJdymIGHCdIF4G149fk0GSkbE3+yhwvGvTXj JPYFZpDeQvnLBy293t2lIkxk5GGvaC2w7gZvP3Pt6qZAFZvbVxGTOoKwqp+zJ7valQhr xvmImfSJAw2fzIzTXE4Or4XXsPXpP5i1rcmRwDwGk8qQnXoCVfZLoyaQBPq2J5ChWPR0 w5nLlVSVB7IFfwmRZEfVwVxjOvHCMbXtu1Eeyl1JZ88vfD0OvbSeWn7RwBSoLWZoOiVl EuYg== X-Gm-Message-State: AD7BkJJ4ZaGY+7wGDmRTWxi4nvS2OwcKWPrcxB9LMV0I1cD9DTnaAiMAC+1nFhQx0/W8no4EPXCNk7rU7gk8Eg== X-Received: by 10.28.44.9 with SMTP id s9mr11997524wms.96.1459775140100; Mon, 04 […]