550 Sender domain is a local domain.• 550 Connection denied • 550 Mail is rejected by recipients.• 550 Mailbox unavailable or access denied • 501 Bad address syntax • 552 Message too large • 550 Mailbox not found • 550 Mail content denied • 550 Ip frequency limited ...
The complete NDR error message is as follows: Your message couldn't be delivered because you weren't recognized as a valid sender. The most common reason for this is that your email address is suspected of sending spam and it's no longer allowed to send em...
当出使用腾讯企业邮箱的用户在发现过程当中收到550 Mailbox unavailable or access denied退信提示时,其原因:您要发送的收件人短时间内收到大量邮件,为避免受到恶意攻击,暂时禁止向该收件人发信。 改善建议:暂停向该收件人发信,稍后重新尝试。 阅读了本文的还阅读了:关于腾讯企业邮箱:"550 Mail is rejected by ...
The 550 5.1.8 ACCESS DENIED report should contain information about why the email(s) triggered the error. Once you’ve confirmed the email account isNOThacked and addressed the email volume, it’s time to dig deeper to adjust your EOP settings. Create and configure yourcustom outbound anti-s...
Learn how to fix email issues for error code 5.7.1 (and also 5.7.0 to 5.7.999) in Exchange Online (the recipient is configured to reject email from the sender).
action aborted: exceeded mailsize limit message size 13560221 exceeds size limit 10240000 of server 192.168.210.21 原因：邮件大小超出限制，最大只能发送10M邮件 7、553 authentication is required 原因：SMTP需要身份验证，请检查客户端设置 8、553-Sorry, your email address has 553-been blacklisted ...
550 5.1.8 Access denied, bad outbound sender AS(41000001) Your message couldn't be delivered because you weren't recognized as a valid sender. The most common reason for this is that your email address is suspected of sending spam and it's no longer allowed to send messages outside of ...
Starting last week I have been unable to send emails from any of my 3 domains that are hosted through GoDaddy with Microsoft 365 email services. They all come back with 550 5.7.705 Access denied, tenant has exceeded threshold. I am a small business owner and a total non-techy perso...
2、550 Mail is rejected by recipients. 出错原因:用户设置个人黑名单或者过滤器拒收 改善建议:如果您是此群发邮件的管理员,请停止群发对该用户造成骚扰的广告及推广类邮件。 3、550 Spam is embedded in the email 原因: 该邮件内容用户自定义部分被嵌入了垃圾信息,被大量用户投诉为垃圾邮件,QQ邮箱将禁止此类邮件...
Hi, Sending mail from my own email server (a Cloud Server) to 365 hosted email accounts is suddenly refused this week. We followed all the steps 100 times (as described) but the e-mail is still refused with the message: 550 5.7.511 Access denied,…