This FAQ is designed to answer common questions about sending e-mail from MVS.
What are my options for sending e-mail from MVS?
What is SMTP? What is its purpose?
What is RFC822?
What is MIME and why is it important?
What does a SMTP data stream consist of?
How can I send attachments?
How can I prevent users from pretending to be someone else when they send mail?
How does SMTP-Send insulate me from the various Internet Protocols?
Where can I get more information about the IBM SMTP Server?
Do I have to use the IBM SMTP Server?
Do I have to use the IBM SMTP Server?
The SMTP Server is supplied as part of the z/OS or OS/390 Communications Server. It performs a number of functions such as receiving incoming SMTP traffic and reading outgoing SMTP traffic from the JES Spool and sending it to its ultimate destination. If you don't want to accept inbound SMTP traffic, see "How do I prevent spammers from hijacking my SMTP Server" below.
For outgoing traffic only, use SMTP-Send's Spool Server. This program, like IBM's SMTP Server reads outgoing SMTP items from the JES Spool. Unlike the IBM SMTP Server, it does not attempt to deliver each piece of mail to it recipients. Instead it sends the entire SMTP datastream to a remote SMTP mail server (known as relay server). Many organizations employ such a server, sometimes called a smart host, to act a central point for outgoing mail.
My SMTP server doesn't recognize the @ character in my e-mail addresses. How can I send mail?
How can I get my SMTP Server to relay all mail to another SMTP mail server?
How do I prevent spammers from hijacking my IBM SMTP Server?
How can I tell who's sending e-mails?