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- 14 Jul 2022, 03:57
- Forum: General Discussion (csf)
- Topic: Is Office365 large Group Email Blocking Related to CSF?
- Replies: 1
- Views: 1708
Is Office365 large Group Email Blocking Related to CSF?
Recently reported by users When using office365 to send large group mail to the host, there is a bounced message There are two types of error messages currently appearing: 7/13/2022 5:30:19 AM - Server at PR3PR09MB4265.eurprd09.prod.outlook.com returned '550 5.4.318 Message expired, connection reset...