Category: Email

SPF and Email Flow Analysis Tools
article #998, updated 119 days ago

To verify the validity of an SPF record installed for a domain, go here:

put the domain in the form for “Does my domain already have an SPF record? What is it? Is it valid?”, and submit. This will detect many issues, including issues which the syntax checker further down does not catch.

To do a deep study of a bounceback, the best tool this writer has ever seen is here:

in the Message Analyzer tab. Just paste every header you have into there and submit, and then read. Lots and lots of excellent information comes up.

Categories:   Email   


Exchange address book, calendar, and email for Thunderbird - Bridge Exchange to IMAP
article #398, updated 400 days ago

Try DavMail:

It runs in the background on server, desktop, or laptop (Windows, Linux, or Mac), and it translates native Exchange protocols into that which Thunderbird and appropriate add-ins handle very well. In other words, it acts as a live bridge between Exchange protocols and Thunderbird with Lightning, for contacts and calendar. The instructions are thorough and functional.

Categories:   Email   Exchange and Exchange Online


SPF for Constant Contact
article #873, updated 482 days ago

Recently it has come to light that the following need to be added to SPF records for email-enabled domains using Constant Contact:

Categories:   Email   DNS


Sending mass email marketing via SMTP
article #843, updated 563 days ago

A few methods:

The first two have free-of-charge tiers.

Categories:   Email   


Populate the Autocomplete in Outlook 2013
article #809, updated 667 days ago

  1. Create a new email.
  2. Click the To: button.
  3. Choose all of the contacts that you want to use to populate with.
  4. Click OK. Do NOT send!

Categories:   Email   


Migrate IMAP accounts
article #771, updated 771 days ago

A recommended tool:

Categories:   Email   


Really good Android email client
article #752, updated 820 days ago

Try this:

Categories:   Android   Email


A for-pay Exchange connection plugin for Thunderbird
article #723, updated 910 days ago

Something new, $10/year. Working great for me as of this writing.

Categories:   Email   Exchange and Exchange Online


Configuring Exchange Autodiscover
article #254, updated 1374 days ago

A Microsoft reference is here:

with further notes here:

This has to be set at the Internet level only. We’ll use “” as the domain name, just replace it with yours.

  1. If there are any A or CNAME records pointing to “”, delete them. If the cert for your server uses “”, change it to something else, e.g., “”.
  2. If there are any A or CNAME records pointing to “*”, an asterisk for global, you’ll have to remove them too. You will need to replace with multiple specific records, or a subdomain, if you’re using a global configuration.
  3. In your Internet DNS, create a new SRV record:

At Network Solutions, the “Service” pulldown needs to have “_autodiscover”, the “Protocol” pulldown needs to have “_tcp”, “Priority” and “Weight” need to be zero, the “Port” needs to be 443, and the “Target” needs to be the A record name used in the MX record, e.g., “”.

At GoDaddy, “Service” needs to contain “_autodiscover”, “Protocol” needs to contain “_tcp”, “Name” needs to contain “@”, “Priority” needs to be 0 (zero), “Weight” needs to be 0 (zero), “Port” needs to be 443, and “Target” needs to be the A record name used in the MX record, e.g., “”.

You can test the setup with nslookup:

nslookup -querytype=SRV

The result should be approximately thus:

Server:  dns.domain.local

Non-authoritative answer:        SRV service location:
          priority       = 0
          weight         = 0
          port           = 443
          svr hostname   =

Categories:   Exchange and Exchange Online   Email


Internet email whitelist
article #537, updated 1387 days ago

Something new, an Internet email whitelist:

Categories:   Email