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Barracuda Email Security Gateway
Why is my QMAIL server having trouble performing recipient verification over SMTP with my Barracuda Spam Firewall?
Scope:
All Barracuda Spam Firewalls used in conjunction with a QMAIL server, all firmware versions.
Answer:
By default the QMAIL email server software will not validate recipients during the SMTP transaction. However, there is a patch available so that QMAIL can return a 550 error for invalid recipients during the SMTP transaction.
Information on the patch can be found on the following website:
http://www.nwdb.co.uk/email/qmail-verify.html
Link to This Page:
https://campus.barracuda.com/solution/5013000000061HZAAY