e.email Connection refused: IPV6 address for SMTP server does not listen on 587?
Real issue for several e.email users: https://community.e.foundation/t/since-lately-i-couldnt-use-deltachat-no-more-with-my-e-account/21163/
analysis: the e.email smtp server has one IPV6 and one IPV4 address. IPV6 delivers connection refused while IPV4 works:
$ host mail.ecloud.global mail.ecloud.global has address 18.104.22.168 mail.ecloud.global has IPv6 address 2a01:4f9:c010:c4fd::1 $ telnet 2a01:4f9:c010:c4fd::1 587 Trying 2a01:4f9:c010:c4fd::1... telnet: Unable to connect to remote host: Connection refused $ telnet 22.214.171.124 587 Connected to 126.96.36.199.
"e.email" probably shouldn't advertise an IPV6 address if it doesn't accept connections on the smtp-port it advertises in its autoconfig settings https://autoconfig.e.email/mail/config-v1.1.xml