Microsoft Outlook, Outlook Web Access, Instant Messaging and Unified Messaging, Mobile Devices
Microsoft Exchange Server 2013, Microsoft Exchange Server 2010, Microsoft Exchange Server 2007, Microsoft Exchange Server 2003, Legacy Exchange Servers, SharePoint, Small Business Server
Mail Protocols, Internet Information Services (IIS), Administration Tools, Licensing, Mailbox Management, Monitoring and Logging, Performance, Scripts and Programming, User Settings, Active Directory, Calendar and Contact Management
.OST Files, .PST Files, Backup Microsoft Exchange Server, Clustering, Database Management, Defragmentation, Email Archiving, Hardware Management, Information Store, Public Folders, Storage Management, Replication and Synchronization, Transaction Logs
Spam and virus protection, Email Compliance, Email Encryption, Email Policy Management, ISA Server and Firewalls, Password Management, Microsoft Exchange Server Permissions, Phishing and Email Fraud Protection, User Authentication for Outlook and OWA, Virtual Private Networks (VPNs), Compliance Management, Compliance tools
Deployment and Migration Advice, Deployment and Migration Tools
Do you have an e-mail antivirus program that is checking your e-mail? If so, check to ensure that the port it is passing the mail through to the Exchange server is secure.
Often these e-mail programs will accept mail through port 25, and then check it and pass it through port 1025. The antivirus program may not allow spam relays, but you need to double-check the other port to ensure that it too is secured properly.
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This was first published in April 2001
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