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This may explain why some of our people can receive but not send mail when they use isp.com to dial in when they're traveling. The isp.com support people say "we block all port 25 access except mail.isp.com."
Can we get around this by opening another port besides 25 or 26 on server nifty? We have a mix of Mac, PC Eudora, and Thunderbird users, so I don't know which to suggest. (Eudora does have a checkbox for port 587)
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