fixed mailbox.org smtp server config

https://kb.mailbox.org/display/MBOKB/E-Mail-Einrichtung+-+allgemein
smtps.mailbox.org is not correct anymore. Changed to port 587 which is what is working for me.

domains.csv

@@ -114,7 +114,7 @@ loves.dicksinmyan.us,mail.cock.li,993,mail.cock.li,587
 lukesmith.xyz,imap.yandex.com,993,smtp.yandex.com,587
 mail.com,imap.mail.com,993,smtp.mail.com,587
 mail.ru,imap.mail.ru,993,smtp.mail.ru,465
-mailbox.org,imap.mailbox.org,993,smtps.mailbox.org,465
+mailbox.org,imap.mailbox.org,993,smtp.mailbox.org,587
 memeware.net,mail.cock.li,993,mail.cock.li,587
 ml1.net,imap.fastmail.com,993,smtp.fastmail.com,465
 mortemale.org,mail.autistici.org,993,smtp.autistici.org,465