邮件黑名单系列文章五十七:IP被1&1 IONOS列入黑名单

1&1 IONOS: 官网:https://www.ionos.com/ 是中小型企业的网络托管和云合作伙伴。我们是IaaS的专家,为数字空间提供一系列解决方案。作为欧洲最大的托管公司,我们管理着800多万份客户合同,并在我们位于美国和欧洲的区域数据中心托管了超过1200万个域名。

我们帮助企业家在网上迈出第一步,扩大企业主,大公司以及帮助他们成功的合作伙伴。无论是通过保护域建立在线形象,建立网站,将后台流程移至云,还是编排容器集群,我们的综合产品系列都能提供同类最佳的应用,服务器或服务。

可靠性和安全性是我们产品的核心。我们的数据中心网络可提供最佳性能和地理数据。总部设在德国,我们依靠先进的技术,强大的隐私政策和密不透风的数据安全性。

客户服务至关重要,这就是我们为每位客户提供专门的客户服务代理的原因。您自己的个人顾问将花时间了解您和您的业务,帮助您充分利用您的在线业务。通过单点联系提供世界级的客户支持,无需额外费用。

您应该以优惠的价格和易于理解的方式获得最新技术。最好的合同是灵活的,不需要法律专家团队,所以我们试图使我们的产品和价格尽可能透明。帮助您在线取得成功是我们的收获 - 确保您有时间处理其他更重要的事情是我们的目标。

1&1诞生于1988年,其主要目的是使信息技术易于人人理解和使用。致力于提供强大,可靠和安全的产品,1&1设计了自己的数据中心架构和广泛的网络,使数百万客户能够上网,建立他们的网络存在,并利用更复杂的数字服务。
在欧洲取得初步成功后,1&1于2003年在宾夕法尼亚州的切斯特布鲁克推出了1&1 Inc.。在一年内,1和1扩大了其在美国的客户服务团队,并在2004年11月,该公司跻身美国十大网络托管服务提供商之列。为了更好地服务于市场,在堪萨斯州的Lenexa委托建立了一个拥有40,000多台服务器的大型数据中心。2010年完成对mail.com的收购,1&1帮助巩固了其在美国市场的地位。
大众市场托管成功,加上多年为云应用程序量身定制服务器硬件的经验,得到了其他战略收购的补充,以创建一个成熟的托管领导者。1&1巩固了其作为世界级托管解决方案提供商的地位,并成为欧洲最大的域名注册商。
强大的基础架构组合,1&1,然后将基于云的数字化应用程序和工具集成到其产品中,使任何规模的企业能够安全,简单地利用云的优势。

在2018年,为了巩固其使企业能够利用最新数字技术的愿景,1&1将其网络托管,应用程序和服务器产品线与ProfitBricks的云基础架构解决方案相结合,成为1&1 IONOS并重申其对创新和以客户为中心的奉献精神。
凭借其传统,1&1 IONOS将继续其使命:为每个人提供强大的技术工作,并提供最佳的云计算。
1&1 IONOS是United Internet group的成员。

有大量的欧洲企业邮箱用的是ionos的企业邮箱,IP被阻止如下

<<<recv: 554 For explanation visit https://www.ionos.com/help/index.php?id=2425&ip=158.69.161.31&c=bl

1&1 IONOS Mail Servers(邮件服务器)具体的SMTP信息https://www.ionos.com/help/index.php?id=2425&ip=158.69.161.31&c=bl

 

In this article, you will find an overview of the error messages that our mail system issues when emails cannot be delivered to 1&1 IONOS mailboxes.

421 Reject due to policy violations:

Due to a poor delivery rate (sending to too many non-existent email addresses), the IP address of your email server is currently blocked for the delivery of emails. The main causes for a poor delivery rate are either outdated address lists for newsletters and other mass mailings or compromised mailboxes that are misused for sending spam. Please correct the problem and try again at a later time.

421 Rate limit reached. Please try again later:

Too many emails were delivered in too short of a time span. Please try again in a few hours and then reduce the shipping rate.

450 Reject due to policy violations:

This error may be caused by the following:

  • The delivery of emails was temporarily delayed due to a constantly changing HELO/EHLO entry of the shipping server. Usually, email servers use a unique HELO entry per IP address. Changing HELO entries in the SMTP dialog indicate a potentially infected system that is being abused by a virus to send spam. If our systems detect such an attempt, emails are temporarily rejected.
  • Your server's IP address is currently blocked for email delivery because too many non-existent email addresses have been written to (poor delivery rate). The main causes are usually outdated address lists for newsletters and other mass mailings or compromised mailboxes that are misused to send spam.

Please correct the cause and try again at a later time.

451 Requested action aborted: local error in processing:

The email could not be delivered successfully because the service was temporarily unavailable. Please try again later.

Please Note

For emails to be delivered successfully, it is important, among other things, that the resolution of the DNS query is always answered quickly by the responsible DNS service. If problems persist, you should inform the administrator of the sending domain so that he can ensure a fast name resolution.

550 Syntax error in parameters or arguments:

Due to an incorrect configuration, the receipt of emails is rejected. Please contact your administrator so that they can configure the server correctly based on our recommendations.

550 Requested action not taken: mailbox unavailable:

The specified recipient does not exist in our system or has not used his or her mailbox for too long and has been temporarily deactivated due to inactivity. Please check the spelling of this email address.

550 Reject due to policy restrictions:

The email was rejected because it violates our policies. Possible reasons could be:

  • The sender domain you are using is known as a spam domain. A check is possible, for example, via the provider Spamhaus.
  • The HELO/EHLO entry of the shipping server does not correspond to a fully qualified domain name (FQDN) and must therefore be assigned accordingly by the mail system operator.

If the error persists, please contact your administrator so that they can contact us.

550 Administrative reject:

For administrative reasons it is not allowed to deliver emails. Please contact the administrator of your system so that he can contact us.

550 Invalid DNS MX or A/AAAA resource record:

The sender domain of the email server you are using is not configured RFC-compliant in the domain name service (DNS). This may be due to the following causes:

  • Neither an A nor an MX record is configured in the DNS for the sender domain.
  • The MX record refers to a domain name that cannot be resolved.
  • The MX record refers directly to an IP address.
  • The MX server does not have a valid A-record but only a CNAME record.

Please contact your administrator to correct the incorrect entry in the domain name service. You can check your configuration at http://www.intodns.com/

552 Requested mail action aborted: exceeded storage allocation, Quota exceeded:

Your email could not be delivered because the potential recipient has no free space in his mailbox. Please contact the person by other means and point this out.

554 Invalid DNS PTR resource record:

The IP address of the email server you use is not assigned a domain name in the domain name service (DNS). Please contact your administrator to make the missing entry in the domain name service.

554 Bad DNS PTR resource record:

Emails from your email server have been rejected because the PTR Resource Record (PTR-RR) of your IP address does not comply with our policies. Possible reasons for this could be:

  • The PTR-RR indicates that the IP address is dynamically assigned.
  • The PTR-RR is your provider's default generic entry. Please assign your email server its own complete domain name (Fully Qualified Domain Name - FQDN) and enter a valid PTR-RR.

If you are not the operator of the mail server yourself, please contact your responsible administrator or the customer service of your provider.

554 IP address is black listed:

In order to reduce the receipt of email spam, we use common DNSBL lists (DNS-based Blackhole List). These lists contain dynamic IP addresses on the one hand and IP addresses from which spam is currently sent on the other. Please contact your system administrator or email provider to check if your IP address is on an appropriate RBL list and take steps to unsubscribe. In addition, we maintain our own RBL lists based on various criteria. If necessary, you or your administrator can contact us.

554 Reject due to policy restrictions:

The email was rejected because it violates our policies. The sending server mainly transmits spam messages. If the error occurs over a longer period of time, please contact your administrator so that they can contact us.

 

 

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