Not working on my Mac

[Urkman]

Hi,

I try to send a mail trough my Mail provider: (1und1.de). But it's not working...

When I use startTSL I get a sendMailFailed. Login works, because when I change the credentials, I get an Login error.
When I use tsl I simply get no answer. Then the requests runs forever.

Any idea, what I could check?

Thanks,
Stefan

[pilgrim1385]

I used my 163 email for test, and got no reply too.
I changed port to 25, which my 163 email required for insecure SMTP, and changed ssl to .insecure, now it works fine.
Its default port may not what your email want, so research your email setting documents and correct it maybe a good choice.

[Urkman]

I tried a lot, but it's not working :(
The same credentials are working fine in an php environment...

[T2Je]

After changing the ssl credentials to tls(configuration: .default), and correcting the password, I finally sent my email successfully.

[GP89]

It wasn't working for me because I accidentally used tls instead of startTLS SMTPSSLMode