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How to offer tls only on certain ports?

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gordon at dickens

Jun 29, 2009, 11:34 AM

Post #1 of 3 (306 views)
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How to offer tls only on certain ports?

How can I setup exim to only offer tls on certain ports? For example,
if I only want to offer tls on ports 25 and 587 for all hosts then I
thought that I could set tls_advertise_hosts as follows:
tls_advertise_hosts = 0.0.0.0.25 : 0.0.0.0..587
However, it does not appear to work. Any help would be appreciated!
Thanks,
Gordon
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exim-users-20081202 at djce

Jun 29, 2009, 11:51 AM

Post #2 of 3 (290 views)
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Re: How to offer tls only on certain ports? [In reply to]

On Mon, Jun 29, 2009 at 02:34:38PM -0400, Gordon Dickens wrote:
>
> How can I setup exim to only offer tls on certain ports? For example,
> if I only want to offer tls on ports 25 and 587 for all hosts then I
> thought that I could set tls_advertise_hosts as follows:
> tls_advertise_hosts = 0.0.0.0.25 : 0.0.0.0..587
> However, it does not appear to work. Any help would be appreciated!

tls_advertise_hosts is a host list - no port numbers. If you want to make it
port-specific, use an expansion based on $received_port. e.g.

tls_advertise_hosts = ${if eq{$received_port}{587} {*}{:}}

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Dave Evans
http://djce.org.uk/
http://djce.org.uk/pgpkey

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gordon at dickens

Jun 29, 2009, 4:10 PM

Post #3 of 3 (289 views)
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Re: How to offer tls only on certain ports? [In reply to]

Ahh.... Brilliant!

Thanks Dave.

Gordon

Dave Evans wrote:
> tls_advertise_hosts is a host list - no port numbers. If you want to
> make it
> port-specific, use an expansion based on $received_port. e.g.
>
> tls_advertise_hosts = ${if eq{$received_port}{587} {*}{:}}

Gordon Dickens wrote:
> How can I setup exim to only offer tls on certain ports? For example,
> if I only want to offer tls on ports 25 and 587 for all hosts then I
> thought that I could set tls_advertise_hosts as follows:
> tls_advertise_hosts = 0.0.0.0.25 : 0.0.0.0..587
> However, it does not appear to work. Any help would be appreciated!
> Thanks,
> Gordon
>

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