Is mailer daemon mailout12.t online.de trust worthy

The age-old question of email sender reputation!

Mailer Daemon Mailout12.t online.de is a mail server operated by 1&1 Ionos, a German web hosting company. While it's not uncommon for mail servers to have a good reputation, I'll provide some insights to help you assess its trustworthiness.

Sender Score (SS): According to Sender Score, a reputation scoring system provided by Return Path, Mailout12.t online.de has a relatively good score of 92 out of 100. This indicates that the mail server is generally considered trustworthy and has a low rate of spam complaints.

Spamhaus: Spamhaus, another well-known anti-spam organization, lists Mailout12.t online.de as a "neutral" IP address, which means it's not currently listed as a spam source.

RBLs (Real-time Blackhole Lists): A quick check of various RBLs (e.g., Spamhaus, SORBS, Spamcop) doesn't show Mailout12.t online.de listed as a spam source.

Other factors: 1&1 Ionos is a reputable web hosting company with a good reputation in the industry. Mailout12.t online.de is likely a legitimate mail server used by 1&1 Ionos customers to send emails.

Conclusion: Based on the available information, Mailout12.t online.de appears to be a trustworthy mail server with a good reputation. However, it's essential to note that email sender reputation can change over time, and it's always a good idea to monitor your email campaigns and adjust your sending practices accordingly.

If you're concerned about the reputation of a specific email sender or have questions about email deliverability, feel free to ask!