Re: [mailop] [EXTERNAL] Re: Moving email server to new IP

[Russell Clemings via mailop]

Thanks, but the part I don't know is how to segment the outgoing mail.
Using exim on cpanel.

On Thu, Jul 7, 2022, 12:05 PM Jeff Dellapina 
wrote:

> Russell,
>
>
>
> As DJ mentioned… update your DNS records but include both platforms.
>
> Segment your data into most active, mid active, some active and not
> active. Focus sending to most and mid active off the new IP
>
> As you mentioned…. Send 10% of your most engaged recipients off the new
> platform and 90% off the old platform.
>
> After a day or two.. move 20% over to the new platform.
>
> Lather rinse and repeat until all email goes new and none goes old. Delete
> the DNS records for the old platform.
>
>
>
> Thanks,
> Jeff
>
>
>
> *From:* mailop  *On Behalf Of *Russell
> Clemings via mailop
> *Sent:* Thursday, July 7, 2022 2:19 PM
> *To:* mailop 
> *Subject:* [EXTERNAL] Re: [mailop] Moving email server to new IP
>
>
>
> How exactly does one ramp up the volume when migrating to a new mail
> server? I once asked an ISP and never got a real answer. I couldn't see how
> to send 10% to the new server today, 20% tomorrow, etc.
>
>
>
> On Thu, Jul 7, 2022, 11:14 AM DJ Anderson via mailop 
> wrote:
>
> Before putting it into service I would check it against the known
> blacklists.
>
> If its clear there and you have your rDNS,SPF,DMARC,DKIM records setup
> correctly you should be safe. That being said I usually monitor the logs of
> the newly online server\address to ensure it isn't getting blocked. My
> other recommendation would be to slowly ramp up message volume rather than
> just going from 0 to 10k messages a day if you can. That should help with
> the reputation as well.
>
> For checking black lists I like to use
> https://mxtoolbox.com/blacklists.aspx
> 
>
> DJ Anderson
> Techwebhosting
>
> - Original Message -
> From: "Nate Burke via mailop" 
> To: mailop@mailop.org
> Sent: Thursday, July 7, 2022 1:41:32 PM
> Subject: [mailop] Moving email server to new IP
>
> I've had a small multi-domain business mail server running on the same
> IP for the last 20 years, I need to change the IP from an address in a
> reassigned IP block, to my own ARIN block.  Is IP reputation still a big
> deal, or are anti-spam measures now content/quantity based and the IP
> address isn't as important anymore.  Can I just flip the IP and update
> my DNS/SPFs and be good.
>
> Thanks,
> Nate
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>
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Re: [mailop] Best practices for forwarding email to Gmail (revisited)

[Brandon Long via mailop]

Unfortunately, false negatives still apply to other features of the
forwarding host, not rewriting only
helps them from applying to your SPF domain.

Forwarding more than say 10 or 20% spam will start to cause problems either
way.

I was surprised they are listening to SPF -all, I would have argued against
that when I was on the team, but they obviously have a more
up-to-date view of the current state of things.  If you wanted to be really
fancy, you could only rewrite for SPF -all

Brandon

On Sun, Jul 3, 2022 at 9:56 AM Petar Bogdanovic via mailop <
mailop@mailop.org> wrote:

> On Fri, Jun 24, 2022 at 01:13:31PM -0400, Todd Herr via mailop wrote:
> >
> > If the forwarder first filters out the spam, then rewriting should be
> fairly
> > safe to do.
>
> The forwarder filters spam, yes, but it can't catch all spam.  That was
> the initial reason to leave envelope sender as-is:  Gmail seemed to use
> false negatives against the forwarder at some point.
>
>
> > You don't say what domain you didn't rewrite, but is it possible that the
> > domain in question on the rejected message has an SPF record ending in
> "-all"?
>
> Affected domains all had "-all" SPF records.  That didn't seem to have
> an effect until recently.
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Re: [mailop] [EXTERNAL] Re: Moving email server to new IP

[DJ Anderson via mailop]

Nate, 

It depends mostly on how your system is setup. 

If you are wanting to "replace" the current address on the current system with 
the new one then ramping up\down your usage won't be possible. If you are 
migrating from one server to another on a new IP then it is usually easiest to 
do that by domain. 

In my environment I am running a set of edge spam\mail servers that handle all 
incoming and outgoing mail. Those servers then maintain a table of where to 
send the messages to the actual mail servers that the customers use. This 
allows me to very easily switch things around should I have an exchanger go 
offline or an IP get a bad reputation. I can simply retire that address or turn 
the server off and not miss a beat. It also allows me to spread my exchangers 
around the internet to ensure better reliability. 

DJ Anderson 
Techwebhosting 


From: "mailop"  
To: "mailop"  
Sent: Thursday, July 7, 2022 3:45:47 PM 
Subject: Re: [mailop] [EXTERNAL] Re: Moving email server to new IP 

Are you talking moving to the new IP by mailbox, by domain, or some other 
metric? 

On 7/7/2022 2:04 PM, Jeff Dellapina via mailop wrote: 





Russell, 



As DJ mentioned… update your DNS records but include both platforms. 

Segment your data into most active, mid active, some active and not active. 
Focus sending to most and mid active off the new IP 

As you mentioned…. Send 10% of your most engaged recipients off the new 
platform and 90% off the old platform. 

After a day or two.. move 20% over to the new platform. 

Lather rinse and repeat until all email goes new and none goes old. Delete the 
DNS records for the old platform. 



Thanks, 
Jeff 




From: mailop [ mailto:mailop-boun...@mailop.org |  ] 
On Behalf Of Russell Clemings via mailop 
Sent: Thursday, July 7, 2022 2:19 PM 
To: mailop [ mailto:mailop@mailop.org |  ] 
Subject: [EXTERNAL] Re: [mailop] Moving email server to new IP 





How exactly does one ramp up the volume when migrating to a new mail server? I 
once asked an ISP and never got a real answer. I couldn't see how to send 10% 
to the new server today, 20% tomorrow, etc. 





On Thu, Jul 7, 2022, 11:14 AM DJ Anderson via mailop < [ 
mailto:mailop@mailop.org | mailop@mailop.org ] > wrote: 

BQ_BEGIN


Before putting it into service I would check it against the known blacklists. 

If its clear there and you have your rDNS,SPF,DMARC,DKIM records setup 
correctly you should be safe. That being said I usually monitor the logs of the 
newly online server\address to ensure it isn't getting blocked. My other 
recommendation would be to slowly ramp up message volume rather than just going 
from 0 to 10k messages a day if you can. That should help with the reputation 
as well. 

For checking black lists I like to use [ 
https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmxtoolbox.com%2Fblacklists.aspx&data=05%7C01%7Cjdellapina%40microsoft.com%7C4d57fb54ed3a48c5630208da6049a450%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637928166673653439%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=HsLENmTt6jJVSCGiXtpBnRiatFblyE%2FsjXpq40EyFk4%3D&reserved=0
 | 
 ] [ https://mxtoolbox.com/blacklists.aspx | 
https://mxtoolbox.com/blacklists.aspx ] 

DJ Anderson 
Techwebhosting 

- Original Message - 
From: "Nate Burke via mailop" < [ mailto:mailop@mailop.org ] [ 
mailto:mailop@mailop.org | mailop@mailop.org ] > 
To: [ mailto:mailop@mailop.org | mailop@mailop.org ] 
Sent: Thursday, July 7, 2022 1:41:32 PM 
Subject: [mailop] Moving email server to new IP 

I've had a small multi-domain business mail server running on the same 
IP for the last 20 years, I need to change the IP from an address in a 
reassigned IP block, to my own ARIN block. Is IP reputation still a big 
deal, or are anti-spam measures now content/quantity based and the IP 
address isn't as important anymore. Can I just flip the IP and update 
my DNS/SPFs and be good. 

Thanks, 
Nate 
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Re: [mailop] [EXTERNAL] Re: Moving email server to new IP

[Nate Burke via mailop]

Are you talking moving to the new IP by mailbox, by domain, or some 
other metric?


On 7/7/2022 2:04 PM, Jeff Dellapina via mailop wrote:


Russell,

As DJ mentioned… update your DNS records but include both platforms.

Segment your data into most active, mid active, some active and not 
active. Focus sending to most and mid active off the new IP


As you mentioned…. Send 10% of your most engaged recipients off the 
new platform and 90% off the old platform.


After a day or two.. move 20% over to the new platform.

Lather rinse and repeat until all email goes new and none goes old. 
Delete the DNS records for the old platform.


Thanks,
Jeff

*From:* mailop  *On Behalf Of *Russell 
Clemings via mailop

*Sent:* Thursday, July 7, 2022 2:19 PM
*To:* mailop 
*Subject:* [EXTERNAL] Re: [mailop] Moving email server to new IP

How exactly does one ramp up the volume when migrating to a new mail 
server? I once asked an ISP and never got a real answer. I couldn't 
see how to send 10% to the new server today, 20% tomorrow, etc.


On Thu, Jul 7, 2022, 11:14 AM DJ Anderson via mailop 
mailto:mailop@mailop.org>> wrote:


Before putting it into service I would check it against the known
blacklists.

If its clear there and you have your rDNS,SPF,DMARC,DKIM records
setup correctly you should be safe. That being said I usually
monitor the logs of the newly online server\address to ensure it
isn't getting blocked. My other recommendation would be to slowly
ramp up message volume rather than just going from 0 to 10k
messages a day if you can. That should help with the reputation as
well.

For checking black lists I like to use
https://mxtoolbox.com/blacklists.aspx



DJ Anderson
Techwebhosting

- Original Message -
From: "Nate Burke via mailop" mailto:mailop@mailop.org>>
To: mailop@mailop.org 
Sent: Thursday, July 7, 2022 1:41:32 PM
Subject: [mailop] Moving email server to new IP

I've had a small multi-domain business mail server running on the
same
IP for the last 20 years, I need to change the IP from an address
in a
reassigned IP block, to my own ARIN block.  Is IP reputation still
a big
deal, or are anti-spam measures now content/quantity based and the IP
address isn't as important anymore.  Can I just flip the IP and
update
my DNS/SPFs and be good.

Thanks,
Nate
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Re: [mailop] [EXTERNAL] Re: Moving email server to new IP

[Jeff Dellapina via mailop]

Russell,

As DJ mentioned... update your DNS records but include both platforms.
Segment your data into most active, mid active, some active and not active. 
Focus sending to most and mid active off the new IP
As you mentioned Send 10% of your most engaged recipients off the new 
platform and 90% off the old platform.
After a day or two.. move 20% over to the new platform.
Lather rinse and repeat until all email goes new and none goes old. Delete the 
DNS records for the old platform.

Thanks,
Jeff

From: mailop  On Behalf Of Russell Clemings via 
mailop
Sent: Thursday, July 7, 2022 2:19 PM
To: mailop 
Subject: [EXTERNAL] Re: [mailop] Moving email server to new IP

How exactly does one ramp up the volume when migrating to a new mail server? I 
once asked an ISP and never got a real answer. I couldn't see how to send 10% 
to the new server today, 20% tomorrow, etc.

On Thu, Jul 7, 2022, 11:14 AM DJ Anderson via mailop 
mailto:mailop@mailop.org>> wrote:
Before putting it into service I would check it against the known blacklists.

If its clear there and you have your rDNS,SPF,DMARC,DKIM records setup 
correctly you should be safe. That being said I usually monitor the logs of the 
newly online server\address to ensure it isn't getting blocked. My other 
recommendation would be to slowly ramp up message volume rather than just going 
from 0 to 10k messages a day if you can. That should help with the reputation 
as well.

For checking black lists I like to use 
https://mxtoolbox.com/blacklists.aspx

DJ Anderson
Techwebhosting

- Original Message -
From: "Nate Burke via mailop" mailto:mailop@mailop.org>>
To: mailop@mailop.org
Sent: Thursday, July 7, 2022 1:41:32 PM
Subject: [mailop] Moving email server to new IP

I've had a small multi-domain business mail server running on the same
IP for the last 20 years, I need to change the IP from an address in a
reassigned IP block, to my own ARIN block.  Is IP reputation still a big
deal, or are anti-spam measures now content/quantity based and the IP
address isn't as important anymore.  Can I just flip the IP and update
my DNS/SPFs and be good.

Thanks,
Nate
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Re: [mailop] Moving email server to new IP

[Russell Clemings via mailop]

How exactly does one ramp up the volume when migrating to a new mail
server? I once asked an ISP and never got a real answer. I couldn't see how
to send 10% to the new server today, 20% tomorrow, etc.

On Thu, Jul 7, 2022, 11:14 AM DJ Anderson via mailop 
wrote:

> Before putting it into service I would check it against the known
> blacklists.
>
> If its clear there and you have your rDNS,SPF,DMARC,DKIM records setup
> correctly you should be safe. That being said I usually monitor the logs of
> the newly online server\address to ensure it isn't getting blocked. My
> other recommendation would be to slowly ramp up message volume rather than
> just going from 0 to 10k messages a day if you can. That should help with
> the reputation as well.
>
> For checking black lists I like to use
> https://mxtoolbox.com/blacklists.aspx
>
> DJ Anderson
> Techwebhosting
>
> - Original Message -
> From: "Nate Burke via mailop" 
> To: mailop@mailop.org
> Sent: Thursday, July 7, 2022 1:41:32 PM
> Subject: [mailop] Moving email server to new IP
>
> I've had a small multi-domain business mail server running on the same
> IP for the last 20 years, I need to change the IP from an address in a
> reassigned IP block, to my own ARIN block.  Is IP reputation still a big
> deal, or are anti-spam measures now content/quantity based and the IP
> address isn't as important anymore.  Can I just flip the IP and update
> my DNS/SPFs and be good.
>
> Thanks,
> Nate
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Re: [mailop] Moving email server to new IP

[Florian Effenberger via mailop]

Hi,

Nate Burke via mailop wrote on 07.07.22 at 19:41:
I've had a small multi-domain business mail server running on the same 
IP for the last 20 years, I need to change the IP from an address in a 
reassigned IP block, to my own ARIN block.  Is IP reputation still a big 
deal, or are anti-spam measures now content/quantity based and the IP 
address isn't as important anymore.  Can I just flip the IP and update 
my DNS/SPFs and be good.


I went through something similar about a year ago and blogged about my 
experiences and shared my "cheatsheet". Not sure if a link to own 
publications (CC-BY-SA) are fine on this list - I'm mostly a passive 
reader here. ;-) But I'll follow-up directly with you.


In general, checking several blocklists and some manual checks did the 
trick for me. Note, however, that my experience is based indeed on low 
mail volume.


Florian
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Re: [mailop] Moving email server to new IP

[DJ Anderson via mailop]

Before putting it into service I would check it against the known blacklists. 

If its clear there and you have your rDNS,SPF,DMARC,DKIM records setup 
correctly you should be safe. That being said I usually monitor the logs of the 
newly online server\address to ensure it isn't getting blocked. My other 
recommendation would be to slowly ramp up message volume rather than just going 
from 0 to 10k messages a day if you can. That should help with the reputation 
as well. 

For checking black lists I like to use https://mxtoolbox.com/blacklists.aspx

DJ Anderson
Techwebhosting

- Original Message -
From: "Nate Burke via mailop" 
To: mailop@mailop.org
Sent: Thursday, July 7, 2022 1:41:32 PM
Subject: [mailop] Moving email server to new IP

I've had a small multi-domain business mail server running on the same 
IP for the last 20 years, I need to change the IP from an address in a 
reassigned IP block, to my own ARIN block.  Is IP reputation still a big 
deal, or are anti-spam measures now content/quantity based and the IP 
address isn't as important anymore.  Can I just flip the IP and update 
my DNS/SPFs and be good.

Thanks,
Nate
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Re: [mailop] Moving email server to new IP

[Michael Peddemors via mailop]

On 2022-07-07 10:41, Nate Burke via mailop wrote:
I've had a small multi-domain business mail server running on the same 
IP for the last 20 years, I need to change the IP from an address in a 
reassigned IP block, to my own ARIN block.  Is IP reputation still a big 
deal, or are anti-spam measures now content/quantity based and the IP 
address isn't as important anymore.  Can I just flip the IP and update 
my DNS/SPFs and be good.




IP Reputation is still going strong!  Only so many IPs out there, but 
virtually unlimited domains and content patterns..


As long as your own ARIN block wasn't previously owned by a bad guy, you 
should have no problems, as long as everything is correctly configured.


Common gotcha? Having IPv6 enabled, and not addressing configuration for 
that.  To keep it simpler, start with just IPv4, and then look at IPv6 
later when you are ready..


For the record for others, you might like to include the ARIN numbering 
you intend to use, when asking questions like this. And of course, use a 
reputable upstream in your routing.


Oh, and you might like to get an IP reputation alerting tool active when 
you first start, eg like HetrixTools or MXToolBox










--
"Catch the Magic of Linux..."

Michael Peddemors, President/CEO LinuxMagic Inc.
Visit us at http://www.linuxmagic.com @linuxmagic
A Wizard IT Company - For More Info http://www.wizard.ca
"LinuxMagic" a Registered TradeMark of Wizard Tower TechnoServices Ltd.

604-682-0300 Beautiful British Columbia, Canada

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[mailop] Moving email server to new IP

[Nate Burke via mailop]

I've had a small multi-domain business mail server running on the same 
IP for the last 20 years, I need to change the IP from an address in a 
reassigned IP block, to my own ARIN block.  Is IP reputation still a big 
deal, or are anti-spam measures now content/quantity based and the IP 
address isn't as important anymore.  Can I just flip the IP and update 
my DNS/SPFs and be good.


Thanks,
Nate
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[mailop] Contact at GoDaddy?

[Anne Mitchell via mailop]

Sigh, Ben (RIP) used to be our main contact for both security and spam issues.

Does anybody have a contact anywhere within GoDaddy to whom they could 
introduce me?

Anne

--
Anne P. Mitchell, Attorney at Law
CEO Institute for Social Internet Public Policy
Author: Section 6 of the CAN-SPAM Act of 2003 (the Federal anti-spam law)
Author: The Email Deliverability Handbook
Board of Directors, Denver Internet Exchange
Dean Emeritus, Cyberlaw & Cybersecurity, Lincoln Law School
Prof. Emeritus, Lincoln Law School
Chair Emeritus, Asilomar Microcomputer Workshop
Counsel Emeritus, eMail Abuse Prevention System (MAPS)

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