Computing Topics --> Electronic Mail (E-Mail) --> University E-Mail Systems --> Glue E-Mail --> Acceptable Addresses for WAM / Glue E-mail -->

Acceptable Addresses for WAM / Glue E-mail

SENDMAIL is the program used by WAM and Glue to handle incoming mail. It is under constant development, and the WAM/Glue mail people are active participants in that development, so you'll tend to see the latest SENDMAIL version (with even more recent modifications) on WAM / Glue.

As SENDMAIL has developed, it has placed increasing focus on mail-user protection. So it does a lot of checking before it actually distributes the mail to inboxes, and rejects thousands of undesirable ("spam") or uninterpretable messages each day.

One aspect of this that you may encounter is a narrowed tolerance for "non-standard" addresses on To: and From: lines. The latest version of SENDMAIL will accept only two forms:

Name <user@host>
user@host

Some of the forms we at the Office of Information Technology (OIT) Help Desk have seen that are no longer acceptable are:

<user@host>
user@host "NAME"
"name" <user@host>

If a correspondent of yours says that mail being sent to you is bouncing back to them, with the section marked

----- Transcript of session follows -----

containing one of the following complaints:

>>> DATA
<<< 553 user address required
554 <recipient's-address>... Service unavailable

    or

451 From:domain must resolve

have them forward the bounced mail to helpdesk@helpdesk.umd.edu. We will work with them in an attempt to get their mail program or system configured to a more standard format.

How do I:
How are we doing? Comments on this page?
Office of Information Technology
Office of Information Technology Help Desk Web Site University of Maryland Web Site Office of Information Technology Web Site