the boss of a small business with 5 windows xp pro machines (and 1 more acting as 'server') in a workgroup. All have xp sp2, outlook 2003, fully patched abd 256 KB DSL. things were supposedly going well till I installed Trend Internet Security 2008 on each machine (which I think doesn't scan outgoing mail?). Now, at least the boss is having problems sending large emails (the 1 we are using as an example is a 4 MB video). Most times we get an SMTP server timed out error message. speaking with the pop3 provider for ideas, he feels that 4 MB is not that big for email, (even after I tell him it shows up in outlook as 6 - 7 MB when received - he says that's because of the encryption of binary file for emailing? save it and it's back to the 4.17 MB original size. He says he didn't ahve this problem before the trend install. I turned it off and same problems. they have another location with cable internet and we can send the file from similar machines successfully (taht have trend installed).
Any ideas on how to troubleshoot this? It seems like the DSL is just slow (we are using port 587, not 25) enough to cause problems?
tracert to the mail server goes from 30 -80 ms per hop to 800+ms per hop when sending the email... I never noticed that before - that's along the entire route! again, we get similar results on different machines on the DSL, but not on the cable internet location.
does slow DSL have a limt on the size of attachments?
thanks!
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