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 3. Email
 4. Technical Email Information for IT Staff

 1. Home
 2. Technical Support
 3. IT
 4. Technical Email Information for IT Staff


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TECHNICAL EMAIL INFORMATION FOR IT STAFF

On this page:
    
 1. What are the URLs and IP addresses of our mailservers?
 2. What is volunteer2mail.com?
 3. What do we do to ensure mail deliverability?
 4. What “Return-Path” header value are our messages sent with?
 5. How are bounces processed?
 6. What do our email headers look like?
 7. Typical Email Header Text (for reference purposes) 


WHAT ARE THE URLS AND IP ADDRESSES OF OUR MAILSERVERS?



Outgoing SMTP Servers

URLIP
Addressoutbound.volunteer2mail.com209.15.205.180o2.ptr4681.prod.volunteer2mail.com149.72.203.165o3.ptr4183.prod.volunteer2mail.com159.183.220.81

Transactional

URLIP Addresso2.trans.volunteer2mail.com198.21.7.99

The transactional email server is used for password resets, system
notifications, and similar types of email.

These servers are on the allow lists and registered in feedback loops with major
providers such as Hotmail, Yahoo and AOL in accordance with bulk-sending best
practices. We also continuously monitor the sending reputation of these servers
to ensure optimal delivery. 

If possible, it is recommended that you add our outbound mail servers to your
allow list to ensure deliverability. These are dedicated IP addresses that are
used for the sole purpose of sending mail from our application (we do not send
any form of advertising or marketing mails from these servers). 


WHAT IS VOLUNTEER2MAIL.COM?

volunteer2mail.com is a dedicated domain used to send emails from the Better
Impact family of products 


WHAT DO WE DO TO ENSURE MAIL DELIVERABILITY?

We support SPF, Sender ID, DKIM and DomainKeys for email being sent from the
volunteer2mail.com domain.

Our mail server is on the allow lists and registered in feedback loops with
major providers such as Hotmail, Yahoo, AOL and Comcast.


WHAT “RETURN-PATH” HEADER VALUE ARE OUR MESSAGES SENT WITH?

bounce@volunteer2mail.com 



HOW ARE BOUNCES PROCESSED?

We utilize a custom service to process and send notifications of bounces that
are received at bounce@volunteer2mail.com to notify the original sender of the
bounce; this is done in accordance with recommended SPF guidelines 


WHAT DO OUR EMAIL HEADERS LOOK LIKE?

When we send mail through our service, the headers are as follows: 

Return-Path: <bounce@volunteer2mail.com> 

From: “Your Name” <you@yourdomain.com> 

To: “Recipient Name” <recipient@theirdomain.com> 

Under some circumstances, to ensure deliverability, we need to use the following
headers to send the mail instead (note the addition of the “Reply-To” header and
the use of “message@volunteer2mail.com” in the “From” header): 

Return-Path: <bounce@volunteer2mail.com> 

From: “Your Name” <message@volunteer2mail.com> 

Reply-To: “Your Name” <you@yourdomain.com> 

To: “Recipient Name” <recipient@theirdomain.com> 

Reasons why this is done are as follows: 

 * The sender’s domain contains a DMARC (link to: https://dmarc.org/) record
   with a policy of either: “reject” or “quarantine”. 
 * We detect (via an MX lookup) that the sender’s email is being hosted in
   Office 365. This is done to avoid message such as “This Sender Failed Our
   Fraud Detection Checks and May Not Be Who They Appear to Be” from showing to
   your recipients. 
 * We detect a TXT record in the sender’s domain with the value of
   “_betterimpact-rewrite-sender”. Note: this can be used to force the use of a
   “Reply-To” header for your domain in circumstances where the “From” header
   would cause issues with fraud detection / spoofing in your email
   environment. 


TYPICAL EMAIL HEADER TEXT (FOR REFERENCE PURPOSES) 

Return-Path: <bounce@volunteer2mail.com> 
Received: from [209.15.205.180] ([209.15.205.180:65508] 
helo=outbound.volunteer2mail.com) by smtp51.gate.dfw1a.rsapps.net 
(envelope-from <bounce@volunteer2mail.com>) (ecelerity 2.2.3.46 r(37554)) 
with ESMTP id 2F/94-09431-B184BFD4; Fri, 17 Jun 2011 08:27:07 -0400 
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; 
s=s1024;d=volunteer2mail.com; 
h=from:to:sender:date:subject:mime-version:content-type:message-id; 
bh=wixYDQhFU6dOc6HhkA2YYmdhV0s=; 
b=lapra2B3liMDpfGSzY5TNbXuPIOb8Ep+98dp8+uDLjPmZxElgAo4o5IvdsDbBXfdsLKIMoHf 
bHFKiFmugrV/DnRlTi4RMOK3l+xvtPR8dfrXqcnERQdOKSDNaU6XUnqRFEDj0xNg8s5DsnAW 
WGnVAETTXAYtaraReENUgITtWtY= 
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; 
s=s1024;d=volunteer2mail.com; 
h=from:to:sender:date:subject:mime-version:content-type:message-id; 
b=GGLkdKj1hCa8HE8MS0WLcOONj3IzyfwP7cm8uAbNa1OU762gusqtHlNHI4/XleIv1fwqn2vU 
XoGJa/ElYw691XsDYTlPoyJ0nhnS24CwP6MNa8tUtJQmXmaoEx8+FWRpv3nxfgZK4FFshpF3 
73tj2e15C8Nk04d3jnMO6ieq5eQ= 
Received: from mail pickup service by outbound.volunteer2mail.com with Microsoft
SMTPSVC; 
Fri, 17 Jun 2011 08:27:06 -0400 
From: <johndoe@example.com> 
To: <janedoe@example.com> 
Date: Fri, 17 Jun 2011 08:24:46 -0400 
Subject: Subject 
MIME-Version: 1.0 
Content-Type: multipart/alternative; 
boundary=”_=aspNetEmail=_d6ef38fc43584694bd897c3367f0c448″ 
X-Mailer: aspNetEmail ver 3.7.0.10 
Message-ID: <vol2web1697b83fd01bc4e819c576c84dfeccf4e@vol2web1> 

Updated on April 16, 2024
Tagged: enterpriseorganization


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ON THIS PAGE:

    
 1. What are the URLs and IP addresses of our mailservers?
 2. What is volunteer2mail.com?
 3. What do we do to ensure mail deliverability?
 4. What “Return-Path” header value are our messages sent with?
 5. How are bounces processed?
 6. What do our email headers look like?
 7. Typical Email Header Text (for reference purposes) 


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