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ISP Port 25 Blocking

I am running an email server at my office server behind an asl 4.xx version firewall.

Recently the ISP who services my home decided to block port 25 to all servers except their own. Since I run my own domain I would like to be able to connect and send email via my own email server and not my ISP.

Can anyone suggest a work around for achieving this goal??

Would SSL work? Can i open allternative ports to replace 25?

thanks

asher

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0 SecApp over 21 years ago

Most ISPs I've worked with are reasonable and open it up if you let them know you need it. It's an understandable position they now take with blocking port 25 by default, given how careless people are with their security...
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0 asher over 21 years ago in reply to SecApp

My ISP is OOL and they will not open port 25 unless you upgrade to their business class service (which makes no sense for me to do)

Therefore I decided to simply change the outgoing smtp server on my home machines to OOL's smtp server and route all email through them...we shall see how this works (i have to see what restrictions they have etc..)

But at least in the mean time it works

asher
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0 SecApp over 21 years ago in reply to asher

So having your own mail server means you're a business; how conVENient! And my condolences.

Jim's advice was the most appropriate for your situation...
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0 JimmyM over 21 years ago in reply to SecApp

Thanks, SecApp.
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0 JimmyM over 21 years ago in reply to SecApp

Thanks, SecApp.
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0 THoehne over 20 years ago in reply to JimmyM

Hi!

I have a similar problem here...

I want to change the port, on which the SMTP proxy gets its mails.
We are using the DynDns Relay Service which can forward mails to non-standard ports. We want to ensure, that our mails aren't fetched by the wrong server, since we have a dynamic IP from our provider.

Do I just have to create a DNAT rule like this:
Any -> DSL (Address) / ODDSMTPPORT -> DSL (Address) / SMTP

Or does this create problems with the SMTP service?

Thanks,
Thorsten
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0 THoehne over 20 years ago in reply to THoehne

Noone?
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