I get an error when I try to add my IMAP/SMTP account

[kaanngunerr]

LOGS:

MAIL FROM:info@xxxxx.xxx
250 OK
RCPT TO:email@invalid.com
550-The mail server could not deliver mail to email@invalid.com. The account
550-or domain may not exist, they may be blacklisted, or missing the proper dns
550 entries.

SASL_PATH:

SMTP Last Response Code: 550
SMTP Last Response: The mail server could not deliver mail to email@invalid.com. The account
or domain may not exist, they may be blacklisted, or missing the proper dns
entries.

[glenn2223 (Glenn)]

Duplicate, please see:

Account Set up fails with SMTP error

Description An account in mailspring can not be set up when the SMTP server refuses to send to ‘email@invalid.com’. This behavior is strange. We have a server that is limited in which domains it relays to, ‘invalid.com’ is not one of them of course. There should at the very least be an override button in the interface to skip such a verification but in my opinion it would be better not to use this verification at all. To Reproduce… The description above should give enough of an indication on …

[kaanngunerr]

As far as I understand, it connects to the mail account and sends mail to email@invalid.com for testing purposes. The mail is going but the other party doesn’t seem to receive it. But this is just a theory. I’m not sure it’s that way.