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Hello, I may have a somewhat unique situation regarding an IPv4 relayhost on an
IPv4 and IPv6 enabled Postfix MTA; it seems that even for an IPv6 capable
recipient MTA the IPv4 relayhost is used. Is there a way to bind/enforce the
relayhost to be
evilgh...@packetmail.net:
Hello, I may have a somewhat unique situation regarding an IPv4
relayhost on an IPv4 and IPv6 enabled Postfix MTA; it seems that
even for an IPv6 capable recipient MTA the IPv4 relayhost is used.
Is there a way to bind/enforce the relayhost to be IPv4 only, as
in, if
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On 05/18/11 13:02, Wietse Venema wrote:
The Postfix documentation only describes the features that are
implemented. Therefore if you can't find something then you can
safely assume that it is not supported.
Dr. Venema, thank you for your reply.
On 05/18/2011 08:15 PM, evilgh...@packetmail.net wrote:
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On 05/18/11 13:02, Wietse Venema wrote:
The Postfix documentation only describes the features that are
implemented. Therefore if you can't find something then you can
safely assume that it is
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On 05/18/11 13:19, Jeroen Geilman wrote:
Consider why you have set a global relayhost; apparently, you want ALL mail
delivered via this one host.
Negative, I want all IPv4-only, non-IPv6 transit capable, mail delivered via
this host.
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On 05/18/2011 08:23 PM, evilgh...@packetmail.net wrote:
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On 05/18/11 13:19, Jeroen Geilman wrote:
Consider why you have set a global relayhost; apparently, you want ALL mail
delivered via this one host.
Negative, I want all IPv4-only, non-IPv6
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On 05/18/11 13:24, Jeroen Geilman wrote:
But that is not what you have DONE.
Yes, because evidently the two are mutually exclusive. A relayhost cannot be
defined for only IPv4 traffic nor can it be configured to not effect IPv6
capable traffic.
On Wed, May 18, 2011 at 2:30 PM, evilgh...@packetmail.net
evilgh...@packetmail.net wrote:
I'm certainly open for any suggestions for accommodating my goal of applying
an
IPv4 relayhost to non-IPv6 capable traffic if there is such a way to
accomplish
this goal with the existing
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On 05/18/11 13:52, Vick Khera wrote:
What if you do this: eliminate the ability of your mail server to send
SMTP over IPv4, possibly by removing any IPv4 address from it, or
firewalling that ability away.
Set up fallback_relay on this host so
On 05/18/2011 08:52 PM, Vick Khera wrote:
On Wed, May 18, 2011 at 2:30 PM, evilgh...@packetmail.net
evilgh...@packetmail.net wrote:
I'm certainly open for any suggestions for accommodating my goal of applying an
IPv4 relayhost to non-IPv6 capable traffic if there is such a way to accomplish
Jeroen Geilman:
On 05/18/2011 08:52 PM, Vick Khera wrote:
On Wed, May 18, 2011 at 2:30 PM, evilgh...@packetmail.net
evilgh...@packetmail.net wrote:
I'm certainly open for any suggestions for accommodating my goal of
applying an
IPv4 relayhost to non-IPv6 capable traffic if there is
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On 05/18/11 14:43, Wietse Venema wrote:
This should be possible with one Postfix
{SNIP}
No firewalling needed.
To bring closure to this thread and perhaps benefit others in the future:
As part of a defense-in-depth security strategy a strict IPv4
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