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Mail Servers FAQs
If you are using your own mail server program to send emails the most common
problems for undeliverable mails are identified here, please go through them
carefully and it will solve most of your problems.
Most of the time, undeliverable emails to recipient's mail
servers are due to your mail server identifying
itself as an internal mail server with an IP address
127.0.0.1 and can be solved by using an
actual IP address?
Actual IP Address?
For example; using invalid, non-existing, email address in the REPLY TO:
or FROM: field or web-based free email address with no MX Records or
the email address at the FROM: field that is different from the login
IP address. See:
Email Filtering
Every ISPs have
their own standards and ways to filter spam,
therefore, by clearly identifying yourself at the FROM: field for
most web-based email recipients like: Hotmail, Yahoo, etc.,
may not work with AOL or other ISPs or the
other way round.
You may need to
segregate your email address lists, as well as to keep in mind that ISPs
also limits accessibility to their mail server by time and quantity of mails
(whether you are using your own mail server or ISP mail server).
Therefore, you may need to experiment by
using a combination of different strategies for different popular web based
email recipients.
Notes: ISPs
DNS server IP Address has
nothing to do with the process of email message delivery. It merely serves to
turn the
IP address--a series of four 8 bit numbers, ie: 151.196.75.10
into a domain name www.memydomain.com
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