2021/02/25 · I've seen the same problem and traced it to an overeager firewall that dropped the last few bytes of a connection if those bytes were sent ...
2023/08/14 · Resolve the error 'Timed out while sending end of data -- message may be sent more than once' in Hosted Email Security (HES).
2016/11/21 · Hi All, My customer told me they can't receive any email from qq.com, after I check tracking log, I saw they were deferred with the ...
関連する質問
Why you have reached a limit for sending mail your message was not sent?
Why does Outlook keep sending the same message over and over?
2019/02/18 · I got the same "lost connection with 127.0.0.1[127.0.0.1] while sending end of data" issue with mail delivering more than 2 times for email with ...
2009/10/22 · This would appear to be the problem, the IP doesn't match your DNS records and the hosts file should only contain the following:
2019/05/30 · Are you sure you cleaned all the infection from your server? Did you check what the load is on your server and if so, is there anything ...
2021/05/03 · Based on my research, this often happens when: 1. You are using a virus scanner that integrates with Outlook. It will scan outgoing emails as well.
2019/10/04 · In addition, some messages may be going through while others may not. Solution. This can be caused if you have a Cisco PIX or ASA firewall ...
2017/11/20 · I think you can't do anything about that. You can change the frequency and lifetime of deferred mail delivery attempts. Non delivered messages ...
2024/04/04 · Possible reasons for receiving multiple copies of email messages include: Mail forwarding loops. Symptoms: Most often, a mail forwarding loop prevents you from ...