Posts tagged as:

SMTP

SMTP Connector Myth: Messages are always routed over SMTP Connectors with more specific address spaces

January 9, 2008

An Exchange Server message routing myth forever being propagated (including by me!): If 2 SMTP Connectors (or Send Connectors in case of Exchange Server 2007) exist, one with a more specific address space, like exchangepedia.com, and one for a more generic address space like *, messages are always routed over the Connector with the more [...]

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Masquerading SMTP Virtual Servers: Changing the fqdn and masquerade domain

December 18, 2007

You can change the fully-qualified domain name (fqdn) used by a SMTP virtual server from its properties | Delivery tab | Advanced | Fully-qualified domain name. In the following example, we change the fqdn of a SMTP virtual server from its default – letter.exchangelabs.net, to postcard.exchangelabs.net. Figure 1: Changing the fully-qualified domain name in SMTP [...]

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Released: ForeFront Security for Exchange SP1

November 29, 2007

ForeFront Security for Exchange SP1 follows Exchange Server 2007 SP1 out the door. FSE SP1 is compatible with Exchange Server 2007 SP1. It includes support for Windows Server 2008, IPv6, and improved content filtering. Exchange Server 2007 SP1 and ForeFront Security for Exchange – Before you upgrade Exchange Server 2007 to SP1, make sure you [...]

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220 Welcome to a California mail server: Fighting spam with SMTP Banners

November 28, 2007

If you are interested in messaging and fighting spam, you probably watch the legal response to spam with some interest. Given the nature of email and the art of remaining anonymous or otherwise untraceable that spammers seem to have mastered, anti-spam laws were written off as largely ineffective, or even ridiculous. (The FTC begs to [...]

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DigiCert: A Certificate Authority with excellent customer service

July 31, 2007

I finally took the plunge and decided to get a certificate from a public Certificate Authority (CA) for my Exchange Server 2007 server at home. A certificate that supports Subject Alternative Names (SAN certificate, aka “Unified Communications” certificate), no less. Having dealt with a number of CAs in the past, and having heard some horror [...]

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MX Records – Preference or Priority?

July 9, 2007

At times I’ve used the words Preference and Priority interchangeably to describe the numerical value in MX records that determines which record gets used first. Many folks do it, and no, it’s not a crime to use either as long as the message gets across. However, when actually committing words to paper – when writing [...]

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Address Literals in Exchange 2007 and Exchange 2010

June 21, 2007

RFC 2821 allows the use of a literal form of a recipient’s address, which uses the destination system’s IP address enclosed by square brackets in the domain part, as an alternative to a domain name. Commonly known as address literals, this form of addressing helps in delivery of mail to a recipient when the recipient’s [...]

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Exchange Server 2007: Can the quarantine mailbox be an external smtp address?

June 7, 2007

In Tuesday’s Birds of a Feather (BOF) session on Fighting Spam with Exchange Server 2007, someone from the audience wanted to know if an external (smtp) email address can be used as a quarantine mailbox. Exchange does no validation of the email address used for a quarantine mailbox – as long as it’s a valid [...]

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Grimes Gripes About RBLs

May 21, 2007

InfoWorld columnist Roger Grimes gripes about Real-Time Block Lists (aka Real-Time Blackhole Lists, DNSBLs or DNS-based Block Lists. The Exchange Server 2007 term for RBLs is “IP Block List Providers”). The feelings towards RBLs are understandable – you won’t be a fan of RBLs if your IP addresses are the ones getting listed, and your [...]

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Logging SMTP Protocol Activity in Exchange 2010 and Exchange 2007

May 3, 2007

I wrote about SMTP logging in Exchange Server 2003/2000 in what is one of the most popular posts on Exchangepedia [read previous post - "Logging SMTP protocol activity"]. Exchange Server 2007 has its own SMTP stack, and what I like to think of as smarter or more intelligent Receive Connectors (these are protocol listeners, roughly [...]

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