Trouble with

I use with Thunderbird on Windows 10 Professional 64 bit and with ProfiMail Go on Android. Server settings are equal in both apps. This worked for quite a while.

Now with ProfiMail Go (Android) I receive error message when trying to connect to IMAP or SMTP: failed to connect to (port 993) from ... after 10000ms: isConnected failed: ECONNREFUSED (Connection refused)

With Thunderbird (Windows) connection works but email provider T-Online refuses to accept messages: Mail system at host posts this message in inbox: Your message could not be delivered for more than 4 hour(s)... delivery temporarily suspended: host[] refused to talk to me: 554
Maybe because of differing domains? (Server:, address

How can these problems be solved?

About ProfiMail : can you force the use of IPv4 ?

About T-Online : seems like ecloud server is blacklisted :frowning: write to /e/ support

ProfiMail has no such setting. Was there a change with It worked for many months.

Meanwhile I received an answer from the postmaster of T-Online why is blocked - nevertheless the messages arrived with two days delay :interrobang:

Sorry, I can’t help further :frowning:

I suggest you contact /e/ support …