In some cases I think you can use :
g_dns_translate - If mx response is x.x.x.x translate to y.y.y.y:port
Useful for translating ip numbers inside a local intranet and doing
other fancy routing of various sorts.
Syntax: g_dns_translate from=string to=string
See also: g_dns_paranoid, g_dns_match_msg, g_dns_noptr,
g_dns_noptr_skip, g_dns_noptr_msg, g_dns_nocache, g_dns_disk,
g_dns_cache_size, g_dns_system, g_dns_blank_fail, g_dns_host,
g_dns_nlookup, g_dns_require, g_dns_old, g_dns_new, g_spf_dns_timeout
Unfortunately according to ChrisP the "from" parameter doesn't accept
wild cards so you could expect to have a fairly large list in a case
like me.com
--Ed
On 09/10/2014 11:01 AM, Eric Vey wrote:
> This is a curiosity question:
>
> Is there a setting that allows mail addressed to a domain to be sent or
> forwarded to a particular IP or IP block or another server name?
>
>
> ------ Original Message ------
> From: "Ed" HIDDEN@ent.net>
> To: surgemailHIDDEN@etwinsite.com
> Sent: 9/10/2014 10:10:52 AM
> Subject: Re: [SurgeMail List]HIDDEN@m and @icloud.com
>
>> Hi Frank,
>>
>> We don't use m$ stuff here, linux has all that wonderfullness built
>> in. I did find something that very likely would explain the errors we
>> are seeing. Thanks for the suggestion.
>>
>> A little primer : me.com and aliases have 2 basic blocks of IP's they
>> advertise the MX's on at least that are apparent to us -- don't know
>> if they're using geo-ip management or not.
>>
>> On one block we can deliver email without issue, the other it fails
>> most times.
>>
>> Good block 17.172.*
>> Bad block 17.158.*
>>
>> I should note that the "bad block" is deliverable *sometimes*. Also
>> explained by the results.
>>
>> So without further a due I picked 2 IP's from their MX1 advertisement :
>>
>> --- Bad Block!!! Notice the MTU mismatch when it hits 17.1.152.1 .. [
>> line 6 ] Drops to 1488. That explains the error messages perfectly.
>> And it's all apple.
>>
>>
>> tracepath 17.158.8.67
>> 1?: [LOCALHOST] pmtu 1500
>> 1: gateway.easent.net 1.103ms
>> 1: gateway.easent.net 1.075ms
>> 2: 66.192.139.133 4.138ms
>> 3: mia2-pr1-xe-0-3-0-0.us.twtelecom.net 15.307ms asymm 5
>> 4: 17.1.152.1 12.509ms asymm 5
>> 5: no reply
>> 6: 17.1.152.1 12.855ms pmtu 1488
>> 6: 17.0.150.82 85.399ms asymm 7
>> 7: 17.0.150.64 85.346ms
>> 8: 17.0.150.81 85.913ms asymm 7
>> 9: no reply
>> 10: no reply
>> 11: no reply
>> 12: no reply
>> 13: no reply
>> 14: no reply
>> 15: no reply
>> 16: no reply
>>
>> --- good block !!! No MTU mismatch
>>
>> But yet when routed on the good block side when it hits 17.1.152.1 it
>> doesn't exhibit an MTU change.
>>
>>
>> tracepath 17.172.34.9
>> 1?: [LOCALHOST] pmtu 1500
>> 1: gateway.easent.net 1.150ms
>> 1: gateway.easent.net 1.193ms
>> 2: 66.192.139.133 18.927ms
>> 3: mia2-pr1-xe-0-3-0-0.us.twtelecom.net 18.709ms asymm 5
>> 4: 17.1.152.1 23.239ms asymm 5
>> 5: 17.0.140.114 50.572ms asymm 7
>> 6: no reply
>> 7: no reply
>> 8: no reply
>> 9: no reply
>> 10: no reply
>> 11: no reply
>>
>> So now the great mystery has been solved. Will it ever be resolved ? I
>> seriously doubt it.
>>
>> --Ed
>>
>>
>>
>> On 09/10/2014 12:41 AM, Frank Bulk wrote:
>>> If you ever wanted to chase down the MTU issue from a Win32
>>> perspective you could try this free tool:
>>> http://www.elifulkerson.com/projects/mturoute.php
>>>
>>> Pleas share the working and not-so-well-working IPs so we can compare
>>> to our own logs.
>>>
>>> Frank
>>>
>>> -----Original Message-----
>>> From: Ed [mailtoHIDDEN@ent.net]
>>> Sent: Monday, September 08, 2014 10:12 PM
>>> To: surgemailHIDDEN@etwinsite.com
>>> Subject: Re: [SurgeMail List]HIDDEN@m and @icloud.com
>>>
>>> Hi,
>>>
>>> PMTU I don't think so.
>>>
>>> We did find that me.com and aliases advertise a whole big pile of MX's.
>>> After some testing we found that some MX's work great every time,
>>> some
>>> fail most times -- not all [how odd]. Hmmm ! So luck of the draw ?
>>> Also we found that each of those MX's actually front for multiple
>>> different servers ie load balancing and they overlap too. Oh so cool ;-)
>>>
>>> Knowing the IP of a good one we just added a little configuration for
>>> those 2 domains to route to that IP and life is one again good, at least
>>> for now.
>>>
>>> We will have to get into this a bit deeper. I was actually entertaining
>>> the idea we've got an MTU mismatch someplace upstream, seen that action
>>> before but I'm not really sure of that because those 2 domains are the
>>> only ones giving us a problem. And it's obviously not an RBL issue
>>> either.
>>>
>>> Thanks!
>>> --Ed
>>>
>>> On 09/08/2014 10:59 PM, Frank Bulk wrote:
>>>> We've not seen any issues. Anything possibly PTMU related?
>>>>
>>>> Frank
>>>>
>>>> -----Original Message-----
>>>> From: Ed [mailtoHIDDEN@ent.net]
>>>> Sent: Monday, September 08, 2014 11:14 AM
>>>> To: surgemailHIDDEN@etwinsite.com
>>>> Subject: [SurgeMail List]HIDDEN@m and @icloud.com
>>>>
>>>> Has anybody out there had an issue sending email to me.com and
>>>> icloud.com which are really the same place.
>>>>
>>>> This all seems to have started a couple months ago. It's the only place
>>>> we're having an issue with so not a network or server issue because all
>>>> of our servers are experiencing the same issue and have zero delivery
>>>> issues any place else.
>>>>
>>>> We're getting
>>>> after data sent: 421 4.4.2 Timeout while waiting for command.
>>>> and
>>>> Write failed 100 times or 550>540 seconds 550, wrote 37305/1485
>>>> left
>>>> (37305)
>>>>
>>>> which is quite bizarre.
>>>>
>>>> If so did you fix it and how.
>>>>
>>>> Thanks!
>>>> -- Ed
>>>> -----------------------------------------------------------
>>>> EAS Enterprises LLC
>>>> World Class Web and Email Hosting Solutions
>>>> IPv6 ready today for your needs of tomorrow!
>>>> Ask us about dual-stacking your site
>>>> www.easent.net
>>>>
>>>>
>>>>
>>>>
>>>
>>
>> -- -----------------------------------------------------------
>> EAS Enterprises LLC
>> World Class Web and Email Hosting Solutions
>> IPv6 ready today for your needs of tomorrow!
>> Ask us about dual-stacking your site
>> www.easent.net
>>
>
>
>
--
-----------------------------------------------------------
EAS Enterprises LLC
World Class Web and Email Hosting Solutions
IPv6 ready today for your needs of tomorrow!
Ask us about dual-stacking your site
www.easent.net
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