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Very weird e-mail problem

Sardine9

Junior Member
I got a new computer from Dell. I set up Mozilla Thunderbird as my e-mail client. I can send and receive e-mail okay, but cannot send anything with an attachment or forward any e-mail. It gets to 78%, stays there for a bit then says it can't reach my smtp server. I use AVG for antivirus and disabled it's e-mail scanning. The machine came with Macafee, which I uninstalled. I'm also behind a linksys wireless router and tried two different firmware versions and both have the same problem. I made a small .txt file to send as an attachment and this is what the recipient got:

2006/03/16-17:18:48.187 ServerLoaderCOM ImportLocFile() regedit did not finish within the specified time

Any attachment bigger than that won't send at all. My ISP seems to think it's a router problem. Any ideas what's going on here? I'm don't get how I can send and receive e-mail, but not forward or attachments.

Thanks for any help.
 
You might try opening your router under the DMZ setting, just temporarily, to see whether that makes a difference. I would have a software firewall running if you do this; use Win XP's firewall if you don't have any other.
 
I doesn't work with outlook either. I also tried dmz and no luck. I did try it with the modem connecting right to the computer instead of through the router, and that worked perfectly. Only problem is I need the router for the rest of the house. The computer is wired to the router, with all the other computers wireless. All of the other computers have the same problem when I try to use an e-mail client. So I'm positive now that it's a router problem. I've tried two different firmware versions and nothing helps. I guess I could just use my ISP's website to access this mail account, I would just prefer to use Thunderbird. Any other ideas?
Thanks for all the help.
 
What is your MTU setting in your router?
I think that's your issue. Try lowering it until your attachment will send.

Ron
 
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