Hi @jpablo, support team told me server is not supporting direct smtp delivery and I have to use smtp relay server to deliver. Also, newer server is using dedrelay.secureserver.net as relay. It is working now. Thank you for your help.
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Hi there, I have a unmanaged VPS server running Windows Server 2008 r2. Right now I am configuring SMTP feature under IIS6 and set up a SMTP server. I configured DNS record as follow: a @ My IP Address 600 seconds Edit a mail My IP Address 600 seconds Edit a mssql My IP Address 600 seconds Edit cname ftp @ 1 Hour Edit cname smtp mail.mydomain.com 1 Hour Edit cname www @ 1 Hour Edit cname _domainconnect _domainconnect.gd.domaincontrol.com 1 Hour Edit mx @ mail.mydomain.com (Priority: 10) 1 Hour Edit srv _autodiscover._tcp.@ 0 0 443 autodiscover.secureserver.net 1 Hour Edit srv _smtp._tcp.@ 0 0 25 mail.mydomain.com 1 Hour Edit ns @ pdns07.domaincontrol.com 1 Hour ns @ pdns08.domaincontrol.com 1 Hour And I have mail.mydomain.com as Fully Qualified Domain Name under SMTP server properties, Used my IP address and port 25. I also set access control and outbound security to anonymous, connection control and relay restrictions are only given to 127.0.0.1. But I tried SMTPdiag to test SMTP connection and it fails to connect the destination smtp server as follow: PS C:\smtpdiag> ./smtpdiag firstname.lastname@example.org email@example.com Searching for Exchange external DNS settings. Computer name is Somethin. Failed to connect to the domain controller. Error: 8007054b Checking SOA for gmail.com. Checking external DNS servers. Checking internal DNS servers. SOA serial number match: Passed. Checking local domain records. Checking MX records using TCP: mydomain.com. Checking MX records using UDP: mydomain.com. Both TCP and UDP queries succeeded. Local DNS test passed. Checking remote domain records. Checking MX records using TCP: gmail.com. Checking MX records using UDP: gmail.com. Both TCP and UDP queries succeeded. Remote DNS test passed. Checking MX servers listed for firstname.lastname@example.org Connecting to gmail-smtp-in.l.google.com [220.127.116.11] on port 25. Connecting to the server failed. Error: 10060 Failed to submit mail to gmail-smtp-in.l.google.com. Connecting to alt1.gmail-smtp-in.l.google.com [18.104.22.168] on port 25. Connecting to the server failed. Error: 10060 Failed to submit mail to alt1.gmail-smtp-in.l.google.com. Connecting to alt2.gmail-smtp-in.l.google.com [22.214.171.124] on port 25. Connecting to the server failed. Error: 10060 Failed to submit mail to alt2.gmail-smtp-in.l.google.com. Connecting to alt3.gmail-smtp-in.l.google.com [126.96.36.199] on port 25. Connecting to the server failed. Error: 10060 Failed to submit mail to alt3.gmail-smtp-in.l.google.com. Connecting to alt4.gmail-smtp-in.l.google.com [188.8.131.52] on port 25. Connecting to the server failed. Error: 10060 Failed to submit mail to alt4.gmail-smtp-in.l.google.com. I am wondering what's wrong with the configuration and someone pleas can help me. Thank you for your time. p.s. I am going to use php mail() function to send emails.
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