SDF uses SMTP Authentication to allow remote network clients such as desktop, tablet and phone mail applications to use its SMTP server for the purpose of sending (relaying) e-mail messages. SDF users with the VPM, VHOST and MetaARPA memberships have access to the SMTP server.

• SDF's POP3 server address is mx.sdf.org port 110
• SDF's IMAP server address is mx.sdf.org port 143 (993 for TLS/SSL)

• SDF's SMTP server is mx.sdf.org
• SDF's SMTP server listens on port 25 as well as ports 23, 53, 587 and 8080. Some ISPs throttle or block activity on port 25.
• Set your SMTP AUTH secret with mkvpm set secret at the shell. The auth secret is not your SDF password; plese do not set secret to your SDF password.
• Your SMTP AUTH username is your domain name@sdf.org (ex. alan8r.sdf.org@sdf.org)
• SMTP via STARTTLS is recommended. Some email clients may refer to STARTTLS as TLS. TLS/SSL is not STARTTLS.

Please note: the SMTP AUTH secret is set on the command line via mkvpm. The command history of the shell may keep the secret in the history file.

Please note that BlueMail on Android does not support the correct password encryption algorithm, and therefore you cannot set up your SDF email account under BlueMail. The devs have been notified of this bug; if they do fix it, the instructions here will be updated.

• K-9 Mail for Android
• Outlook Express under Windows
• Mail.App under MacOS X
• Mozilla Thunderbird under Windows
• Traditional mail(1)/mailx(1)
• Postfix MTA on NetBSD 6.x
• iPhone Mail Application

Please note that BlueMail on Android does not support the correct password encryption algorithm, and therefore you cannot set up your SDF email account under BlueMail. The devs have been notified of this bug; if they do fix it, the instructions here will be updated.

You should be sending and receiving your SDF mail on your iPhone!