Report a delivery problem between your domain and GmailIf you are the administrator of a non-Google domain and you are having trouble with Gmail, you can use this form to report the issue. Please note that this form is not for use by G Suite administrators or by Gmail users.An email address we can use to contact you *Please enter your email address.Affected domain(s) *Please note the domain affected.Number of users in your domain(s) *Please select one1-499500-9991000-49995000-999910000-20000More than 20,000Please specify the number of users in your domain.Affected Gmail user(s) *Please specify the Gmail users affected.Brief Summary *Enter a brief, but descriptive subject.Please save the full headers of the most recent affected message in a text file, and attach them. *For the most recent affected transaction, include your server's SMTP logs for general delivery problems and POP logs for Mail Fetcher problems. *Please provide the appropriate SMTP logs.List any firewalls or spam filtering devices your domain uses *Please list any firewalls or spam filtering devices your domain uses.Please perform a DNS MX lookup for gmail.com from the affected machine. What are the results?To perform a DNS MX lookup in Windows, use the command: 'nslookup -query=mx gmail.com' To perform a DNS MX lookup in Linux/UNIX, use the command: 'host -t mx gmail.com'Are you able to Telnet to any/all of the servers listed in the MX record on Port 25?Please include the results of your tests.To Telnet to servers listed in the MX record on Port 25, use the command: 'telnet gsmtp185.google.com 25' in all platforms. (Replace 'gsmtp185.google.com' with the results from the DNS MX lookup.)Are you able to ping any/all of the servers listed in the MX record?Please include the results of your ping tests.To ping servers listed in the MX record, use the command: 'ping gsmtp185.google.com' in all platforms. (Replace 'gsmtp185.google.com' with the results from the DNS MX lookup.)Additional Information *Please enter a description of the issue.Submit* Required fieldThank you for your report. We will investigate this issue and take the necessary steps to resolve it. We will contact you if we need more details; however, you will not receive a response or email acknowledgment of your submission. You can check the Apps Status Dashboard for updates on Google performance issues and confirm if you are experiencing a known issue.