Can a Barracuda Spam Filter 300 reject mail based on DNS?

Posted by user84104 on Server Fault See other posts from Server Fault or by user84104
Published on 2011-11-17T23:09:32Z Indexed on 2011/11/18 1:53 UTC
Read the original article Hit count: 476

Filed under:

spam

|

barracuda

Can a Barracuda SF 300 reject mail based on DNS?

Specifically can it respond with a 4XX code for mail claiming to be from a domain without a valid MX or A record (similar to postfix's smtpd_sender_restrictions = reject_unknown_sender_domain).

If so, how do I set it? (I realize it's probably something simple I've overlooked.)

The barracuda can resolve using its configured name servers.
The name servers can correctly resolve external domains.

© Server Fault or respective owner

Related posts about spam

spam spam spam spam [closed]

as seen on Stack Overflow - Search for 'Stack Overflow'
spam removed spam removed spam removed spam removed >>> More
Stop Outgoing Spam Already Tagged as Spam

as seen on Server Fault - Search for 'Server Fault'
Hi, I run a Postfix server with Amavis and Spamassassin among other things. Postfix receives mail from the outside world and passes it on to Amavis. Amavis has Spamassassin rate the mail, and then tags it as spam if necessary. Then Postfix relies on each users' procmailrcs to deal with the mail as… >>> More
spam check, spam score how to?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi. I am doing a app that is sending email and need to have a spam checker on the outgoing email. I have been looking for this a while now, I can not seem to find a good solution. I would like to use something like the spamassassin. Do you guys got any examples how to do the spamassassin with asp… >>> More
configure spam assassin to delete all spam above a score domain wide and override individual settin

as seen on Server Fault - Search for 'Server Fault'
Okay, so this is my scenario and what I want to try and do. I maintain a Red Hat email server running qmail and spamassassin. I have a domain that has well over 100 email account each with individual settings for spam scores and, whether or not to delete email incoming mail deemed spam. What I… >>> More
Make Thundirbird use and sync with Gmail Spam facility

as seen on Super User - Search for 'Super User'
I am using Thundirbird 3.1.7. I am using Gmail with it. When I mark a message as spam in Thunderbird, I want it to go to Gmail's spam folder. But it is not happening. The mail is only marked as spam and stays in Gmail's inbox. How can I setup Thunderbird so that when I mark a message as spam in… >>> More

Related posts about barracuda

Barracuda spam filter alternative - virtualization/appliance friendly?

as seen on Server Fault - Search for 'Server Fault'
I've sold and deployed Barracuda spam and web filters for years. I've always thought that the functionality was good (Barracuda Central, easy interface, effective filtering), but the hardware on the entry to midrange units is a weak point. They have single power supplies, no RAID and limited monitoring… >>> More
Emails Generated From Our Linux Server are Blocked By Our Exchange Server (That Has Barracuda)

as seen on Server Fault - Search for 'Server Fault'
We have our company website hosted on a Linux machine. It is sending mail via postfix. The emails are working and being sent to all email clients like Gmail. However, we are not receiving the emails on our exchange server. When we look at the logs, we see that the connection is being refused,… >>> More
Setting up a Barracuda Spam Filter

as seen on Server Fault - Search for 'Server Fault'
We have just purchased a Barracuda Spam Firewall 300, we have set it up but are having problems authenticating with our Exchange server (2007). I spoke to Barracuda about it and they said I need to exclude the Barracuda box from authentication from within Exchange, how do I do that? >>> More
SQL Server Offsite Backups

as seen on Server Fault - Search for 'Server Fault'
We have about !TB of SQL Server databases, and these databases generate about 200GB of data changes each day. Up to this point we have been doing Weekly full backups, daily diff backups, and hourly transaction log backups. The full and diff backups are backed up to tape and taken offsite each day… >>> More
Mail server not sending or receiving after removal from barracuda blacklist to white list

as seen on Server Fault - Search for 'Server Fault'
Mail server not sending or receiving after removal from barracuda blacklist to white list. I've checked against black lists and the ip and domain are clean. 1and1 are saying its Barracuda black list and barracuda are saying its not blacklisted and that its somethign with 1and1 server. section from… >>> More