I would say in regards #2, ADD another PTR for the new IP, keep your 
existing one as well.

--Ed

On 09/20/2013 05:06 PM, David Camm wrote:
> chris also wrote about using g_bind_out.
>
> my dns currently has this:
>
> mail    IN A 1.2.3.4
>
> and customer dns's have
>
> MX 10 mail.advwebsys.com
>
> if i were to add 5.6.7.8 into the network config and then do g_bind_out
> '5.6.7.8'
>
> someone sending TO us would still see 1.2.3.4
>
> someone receiving FROM us would see 5.6.7.8 as source ip and therefore
> i'd need to change the ptr record (maintained by my colo provider to
> 5.6.7.8).  i should not, i think, change 1.2.3.4 to 5.6.7.8 in my dns.
>
> so i think your solution (ed) is correct in that i need to:
>
> 1. add the additional ip address
> 2. change the ptr to point to it
> 3. set g_bind_out to the new ip address
>
> since bind_out will force writing on the new ip, i don't think the
> gateway statement is necessary.
>
> thoughts????
>
> david camm
> advanced web systems
> keller, tx
>
>
>
>
>
> On 9/20/2013 2:08 PM, Ed wrote:
>> There's a couple different and easy ways to do this :
>>
>> Just add the new IP to the server.  Add a g_gateway entry for all
>> email and bind that to the new IP.  Then all you need is to add to
>> your DNS an A and PTR record for the new IP.   MX and everything else
>> stays the same.  All you're trying to do is get surge to use a
>> different IP to send with.
>>
>> Optionally you can set g_bind_out  to get surge to "send" on the new
>> IP.  You still need the new DNS entries.  This is the way we do it
>> with multi-homed servers behind load balancing.  g_bind_out can take a
>> comma separated list and both ip4 and ip6.
>>
>> Food for thought ?
>>
>> --Ed
>>
>> On 09/20/2013 02:59 PM, David Camm wrote:
>>> thanks for the suggestions, but neither gatewaying to another server nor
>>> changing the ip is viable for me.
>>>
>>> a) i don't have another server to gateway TO and
>>>
>>> b) the server is multi-homed already. just adding another ip will not
>>> get surge to use it. i'd have to reconfigure networking, change the dns
>>> that points to the server AND get my colo facility to change their
>>> reverse dns entry.
>>>
>>> david camm
>>> advanced web systems
>>> keller, tx
>>>
>>>
>>>
>>>
>>>
>>
>
>
>

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