Email Settings for Rr.iij4u.or.jp

Access your Rr.iij4u.or.jp account from your macOS or Windows email client.

Email Settings for Rr.iij4u.or.jp

Incoming Server - IMAP

Server: mbox.iij4u.or.jp
Port: 993 or 143
Security: SSL/TLS
Username: Your full email address
Password: Your password

Outgoing Server - SMTP

Server: mbox.iij4u.or.jp
Port: 587
Security: STARTTLS
Username: Your full email address
Password: Your password