Router blocking Port 25 whenever it wants

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Joined
28 Jul 2005
Posts
186
So I have TP-Link TD-W8961ND and when I try to send an email with Thunderbird it says the connection to the SMTP server has timed out. Then I restart my router without changing any settings and presto I can send my email. 2 hours later things repeat.

I've tried disabling Firewall and SPI, enabling DMZ, forwarding port 25 inside the router settings - nothing works. Only when I restart it then I can send an email.

Any suggestions?
 
you shouldn't need to forward any ports for outbound connections. It sounds like the router is crashing/flushing it's sessions table. No one is torrenting or something at the same time are they?
 
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