Tips for Senders for Getting Mail Successfully Delivered
Like other providers of Internet mail, AT&T uses a variety of
methods for protecting our customers from messages that are unwanted or fraudulent. Inevitably,
legitimate messages are sometimes misidentified as spam or phishing-related. This
happens when legitimate messages are composed and sent using methods commonly identified
with spammers and phishers.
The following recommendations can help ensure that your messages reach AT&T customers.
To avoid getting your message sidelined as spam:
- Comply with the guidelines in the federal CAN-SPAM legislation. Most
importantly, make sure that all legitimate requests for removal from
your mailing lists are honored. The easiest way to get your message
identified as spam is to send it to people who don't want it or to
addresses that are defunct.
For more information about CAN-SPAM legislation, see
To avoid having your messages blocked before reaching mail servers:
- Use a reputable mailing service. There are at least two known risks to using
small or questionable services. First, they may mix legitimate mail with spam from
their other customers. If the proportion of spam to good mail from a particular
sender is high (which you will have no control over), *all* messages from that sender's
address may get blocked including yours. Second, small marketing companies and mailing
services are often run from home offices. If they send mail directly to the
Internet from their home computers, they will look like one of the “zombie”
machines that are responsible for so much of the spam and phishing on the Internet. All
major mail services, including AT&T, regularly block mail from these sources.
To avoid Antiphishing warnings:
- In HTML messages, make sure all the links are transparent. Discrepancies between the
apparent URL and the “real” URL of the destination site will trigger antiphishing
warnings. If you want to send someone to www.vendorsite.com/yourbusinessname/0000.html, then
use that URL in the code. Don't use HTML code to make it look like the destination is a
part of your domain.
- Use a real subdomain if possible: http://customers.businessname.com. Avoid using URLs
that resemble subdomains but aren't: http://www.businessnamecustomers.com.
- Avoid using IP addresses: http://0.0.0.0. Better to use a real domain name.
For further information on this topic, see “How Not to Look Like a Phish”
to AT&T Inquiry Website.