Sending Emails from outside the Campus

Summary

• For some Internet providers (hereinafter referred to as ISP), Outbound Port 25 Blocking (hereinafter referred to as OP25B) is adopted as one of countermeasures against spam mails. The OP25B makes No. 25 port unsuccessfully communicative when the port is used to connect with external mail servers.
• Under the OP25B, users can send emails only with SMTP servers supplied by the ISP, and cannot send emails with SFC-CNS servers from inside of the ISP network.
• In SFC-CNS, the users can send/receive emails from ISP and a like that adopts OP25B by using "SMTP over SSL + SMTP Authentication" or "Submission port (No. 587) + SMTP Authentication".

How to use

• You need your password for SMTP authentication. (The password is the same as the one for receiving on IMAP.)
• If you do not set up "IMAP/SMTP-AUTH" password, you should set up at this page before using.
• Configuration of the SMTP server is as follows.
  1. SMTP over SSL (No.465) + SMTP Authentication

     SMTP Server	Port Number	Authentication Method
     smtp.sfc.keio.ac.jp	465	LOGIN Authentication

  2. Submission Port (No.587) + SMTP Authentication

     SMTP Server	Port Number	Authentication Method
     smtp.sfc.keio.ac.jp	587	LOGIN Authentication

     The LOGIN Authentication is useful on TLS (STARTTLS).

Examples of setting password

• Please refer to the mailer setup examples.