LISTSERV / Block junk email from a single source

Objective

• To provide instruction on blocking junk email from a single source to a LISTSERV list

Environment

• 10283: LISTSERV

Rationale

• If your LISTSERV list receives numerous unwanted messages from a single identifiable source, the list owner can block the offending address; this can also be done for lists that are configured to allow anyone to send messages

Resolution

• Add the email address to the list and block it from sending/receiving mail

1. Open the email application you use as the list owner and create a new plain-text message to LISTSERV@listserv.MiamiOH.edu
2. In the message body, enter:
   • QUIET ADD listname emailaddress
   • QUIET SET listname NOMAIL NOPOST FOR emailaddress
   • listname is the 32-character-or-less name of the list (the part of the list address before @listserv.MiamiOH.edu)
   • emailaddress is the email address that is to be blocked
3. Send the message

Note

• This method should only be used if a single address is repeatedly sending unwanted messages to a list; if a number of addresses are sending unwanted messages, you can restrict the list to only allow subscribers to post