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550 Invalid tag value, 503 Command sequence error - Need RCPT TO: first
Technical Articles ID:  KB71415
Last Modified:  10/10/2013

Environment

McAfee Email and Web Security Appliance software 5.6

Problem

Messages with BATV tagging fail validation when bounced from remote Message Transfer Agents.

Example:
220 scmgateway.mcafee.com EWSA3300/SMTP Ready.
EHLO domain.com
250 Requested mail action okay, completed.
MAIL From:<>
250 Requested mail action okay, completed.
RCPT To:<prvs=0442aaacb=user@mcafee.com>
550 Invalid tag value.
DATA
503 Command sequence error - Need RCPT TO: first.
RSET
250 Requested mail action okay, completed.
QUIT
221 Closing connection.

Solution

This issue is resolved in Email and Web Security 5.6 Patch 1, which is available by logging in to the ServicePortal at: https://support.mcafee.com/downloads.
 
Patches are cumulative; therefore, McAfee recommends that you install the latest one. 

To review the Release Notes for this patch, see PD23135.

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