CiviCRM Community Forums (archive)

Just recently i have been having very high bounce rate when sending out bulk mails.

When i send mailing , i get a bounce rate of about 50% with identical bounce reason, but adding the bounce emails to a group and resending again i get no bounces .

Bounce reason
Failed to add recipient: example@example.com [SMTP: Invalid response code received from SMTP server while sending email. This is often caused by a misconfiguration in Outbound Email settings. Please verify the settings at Administer

Log errors
Ignoring exception thrown by nullHandler: 10005, Failed to add recipient: example@example.com [SMTP: Invalid response code received from SMTP server while sending email.  This is often caused by a misconfiguration in Outbound Email settings. Please verify the settings at Administer CiviCRM >> Global Settings >> Outbound Email (SMTP). (code: 450, response: 4.7.1 <example@example.com>: Recipient address rejected: Exceeded send limit)]

[info] $backTrace = #0 /../../../sites/all/modules/civicrm/CRM/Core/Error.php(880): CRM_Core_Error::backtrace("backTrace", TRUE)

My settings have not changed, and i don't understand why resending to the same group that bounced goes through with 0% bounce rate.

Any ideas?

I will try to double check with my SMTP provider because it was initially limited to 2000per day and the limit was later removed but i was sending to less than 1000contacts. my throttle email delivery settings is 1250