Streamyx issued a notice in its web site informing its users about an anti-spam exercise to mitigate spam in its network.
The action taken was by blocking outgoing SMTP port 25 for all outgoing e-mails from dynamic IP addresses to non-Streamyx mail servers.
In other words, if your company hosts its own mail server, the employees will not be able to send outgoing e-mails if they are connected from home to the office mail server via Streamyx.
SMTP port 25 is a standard outgoing port for most e-mail client software such as, Outlook Express, Mozilla Thunderbird, Eudora, and etc.
Streamyx offered several alternative configuration options. Users may either relay their mail server to Streamyx’s SMTP or use port 587 for all outgoing e-mails.
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