Error 550-5.2.1 The user you are trying to contact is receiving mail at a rate that
I am facing a very annoying issue on my server. My Linux Server has a system to send out notifications to my gmail everyday.
But my server returns errors below.
relay=aspmx.l.google.com[74.125.70.26]:25, delay=0.1, delays=0.03/0/0.05/0.02, dsn=5.2.1, status=bounced (host aspmx.l.google.com[74.125.70.26] said: 550-5.2.1 The user you are trying to contact is receiving mail at a rate that 550-5.2.1 prevents additional messages from being delivered. For more 550-5.2.1 information, please visit 550 5.2.1 http://support.google.com/mail/bin/answer.py?answer=6592 r9si29669915icw.94 - gsmtp (in reply to RCPT TO command))
I know that Google wants to avoid to receive too many emails from the same machine within a period. It should work after a few time.
But even my server has not sent out any emails for 24 hours, the first email after the period is still bounced (the error is still returned).
Do you have any ideas?
Answer
Note that this limit is related to the rate at which the receiving account can receive messages, so this can easily be explained if there are other senders flooding the account. This is not related to sending-side message rate. This is currently relevant: https://support.google.com/a/answer/1366776. Excerpt:
Per minute 60
Per hour 3,600
Per day 86,400
The explicitely indicate that
Setting up the account to receive frequent automated messages, such as log files, increases the likelihood of reaching the limits.