My domain is having delivery problems with Gmail

Note: This article is designed to help mail server administrators with advanced delivery problems. If you are a Gmail user, check out our articles on sending mail or receiving mail instead.

If your domain is having trouble sending or receiving messages to/from Gmail users, your next steps will depend on which hosting service you use.

What is your domain having problems with?My domain can’t send to GmailMy domain can’t receive from Gmail

Is your domain currently hosted by Google Apps?YesNo, I use another hosting service

Is your sending issue limited to Gmail, or are you having problems with other domains as well?It's specific to GmailI'm having problems sending to multiple domains

Do Gmail recipients eventually receive the messages?Yes, but the messages are delayedNo, the messages never reach the recipients

Where did the delay occur?The delay occurred between my domain and GmailThe delay occurred exclusively within my domain

Did your servers pass the diagnostic tests?My servers pass all diagnosticsMy servers fail at least one diagnostic test

Were you able to contact Gmail via telnet?I was able to contact Gmail via the telnet test, with or without an error message generated by Gmail's serversI was not able to contact Gmail via the telnet test

Are you still experiencing issues?My domain is not blacklisting or greylisting Gmail, and the problem occurs even when my firewalls are disabled or otherwise circumventedMy domain is blacklisting Gmail, or the problem goes away when my firewall is disabled

Do you receive delivery failure notifications?Yes, I receive delivery status notificationsNo, I don't receive delivery status notifications

What error did you receive?"The IP you're using to send email is not authorized to send email directly to our servers. Please use the SMTP3 relay at your service provider instead.""550 5.7.1 Our system has detected an unusual amount of unsolicited mail originating from your IP address. To protect our users from spam, mail sent from your IP address4 has been rejected/temporarily blocked."An error message beginning with "4XX"Other

Are you complying with our guidelines?I am following all of Gmail's guidelinesI found a problem, and have corrected it. I am now compliant with Gmail's guidelinesI am not compliant with Gmail's guidelines

Did your servers pass the diagnostic tests?My servers pass all diagnosticsMy servers fail at least one diagnostic test

Do your logs show this delivery entry?Yes, my logs show successful delivery to Gmail's servers.No, my logs do not show successful delivery to Gmail's servers.

Were you able to find the message?I found the message using the advanced search. It was located in All Mail, Trash, or the inbox.I found the message. It was located in Spam.I was unable to find the message.

Did your servers pass the diagnostic tests?My servers pass all diagnosticsMy servers fail at least one diagnostic test

Is your domain currently hosted by Google Apps?YesNo, I use another hosting service

Is your receiving issue limited to Gmail, or are you having problems receiving from other domains as well?It's specific to GmailI'm having problems with multiple domains

Do recipients on your domain eventually receive the messages from Gmail?Yes, but the messages are delayedNo, the messages never reach the recipients

Where did the delay occur?The delay occurred before Gmail connectedThe delay occurred after Gmail connected

Did your servers pass the diagnostic tests?My servers fail at least one diagnostic testMy servers pass all diagnostics

Do senders receive delivery failure notifications?Yes, Gmail senders receive delivery status notifications, either immediately or after a few daysNo, Gmail senders do not receive delivery status notifications

What error did the sender receive?"The recipient server did not accept our requests to connect"Other

Did your servers pass the diagnostic tests?My servers fail at least one diagnostic testMy servers pass all diagnostics