Category: Mail relaying
Mail relaying, Other stuff..., Proxy
PDA Active Sync – Invalid Certificate
The usage of Pocket PCs (PDAs) becomes more and more a default feature for business. The last months I have installed quit some Windows ISA 2006 servers for Reverse Proxy purposes. I have installed them normally for webmail only, but lately I have added the Microsoft Active Sync feature. The Pocket PCs connect to the … Read More
Anti-virus / Anti-SPAM, Mail relaying
LDAP and eSafe Gateway
eSafe Gateway can be used for scanning incoming and outgoing SMTP connections for virusses and SPAM. Normally eSafe Gateway doesn’t check incoming mail addresses against a directory like Active Directory or Novell Directory Services. This means that all mail addresses for a trusted domain are forwarded to the internal mail server. In the most ideal … Read More
Anti-virus / Anti-SPAM, Mail relaying
Barracuda User Creation
I have a customer running a Barracuda SPAM firewall 300. The customer has the specific request that only the administrator can look at Quarantine messages and users shouldn’t get their own Quarantine inbox. To accomplish this I have configured the Quarantine Type: Global. I see that all Quarantine messages are delivered in the globally configured … Read More
relays.ordb.org
Since the day before yesterday, some of our customers complained having problems with receiving e-mail. The senders from the e-mail noticed that their mail had been blocked by relays.ordb.org. This RBL is offline, according to this article, at least everybody thought. Seems to me, the RBL came online yesterday and blocked everything. I have heard … Read More