On Tue, 7 Jun 2005 01:26 pm, Matthew Davidson wrote: > Hi, > > It appears Bigpond is blocking all outgoing traffic on port 25, except > via their own mail servers. I've just spent half a day with a client > trying to work out why he could no longer send email (his mail server is > with an overseas ISP)
I went through this with my brother last year when the change was made. My bother (a BigPond customer) uses my mail server for sending and receiving - not unlike your customer. The work-around in my case was to add destination NAT on my firewall so mymailserver:2525 was NAT'ed to mymailserver:25. Then my brother could manually specify port 2525 as the SMTP server port and problem solved. This will only work if your customer's mail provider is happy to redirect an unprivileged port....unlikely. During this work-around though, it was let slip (by a BigPond support dude) that dynamic customers could apply for a static IP and then they could use what ever ports they want - both inbound and outbound (dialup/DSL/cable - all deliveries covered). I guess with a static IP tracking virused users becomes a hell of a lot easier. The application process wasn't an approval/disapproval process but more "if you ask for one, you'll get one". Maybe your customer can contact BigPong and ask them for a static IP and then everything (should) be back to normal :) HTH, James -- His designs were strictly honourable, as the phrase is: that is, to rob a lady of her fortune by way of marriage. -- Henry Fielding, "Tom Jones"
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