Neuerdings versendet Firefox keine T-Online E-Mails mehr. Sie werden immer als Spam erkannt.
SMTP failure: 550-5.7.0 Message considered as spam or virus, rejected / 550-5.7.0 Timestamp: 2020-01-27T17:43:34Z 550-5.7.0 Expurgate-ID: 150726::1580147014-000177A3-2248D364/7/0 550-5.7.0 Authenticator: 3C922B06451AE49D1186891D5A9A19A53B6B47762F2C4D1F6367302902A4256F089F3C4E 550 5.7.0 Mailhost: email.t-online.de
{"SPICA-REQ-ID":"e271e245-d957-49cb-a9c5-9f136e0bdcea"}
Alla svar (1)
hi, as the screenshot says, you should probably reach out to your webmail provider first, since they might have more insight into what is triggering the error message in their system. another start to debug this would be to look if the same issue is reproducible when you launch firefox in safemode or test it in a new profile.
Diagnose Firefox issues using Troubleshoot Mode Profile Manager - Create, remove or switch Firefox profiles