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- mail() Blocked by Spam Filter
April 7, 2006, 8:45 pm
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least 5 different servers, but email sent through the server of this
"T" company tends to get blocked by spam filters. I tested with my
different email accounts and these are the results.
* The mail is delivered to the "Inbox" of my AOL account.
* The mail is delivered to the "Bulk Mail" folder of my hotmail and msn
* The mail is delivered to the "Spam" folder of another account of
* The mail is not delivered to any of my two university accounts.
One thing I noticed is that this "T" company hasn't setup the "From"
section, unlike the other servers that I worked with before, so the
person of the company update the "php.ini" file, but he doesn't admit
that's the issue. I tried manually adding the From with PHP coding
with "$headers," but it didn't make any change.
So any idea about this problem?
Re: mail() Blocked by Spam Filter
Is it possible that other customers are originating SPAM from this
company, and it has been blocked because of that? If this is the
case, getting off of private block lists may take decades or be
entirely impossible. About the only way out is to find a provider
that is not SPAM-friendly.
Will any of the filters tell you WHY it was considered SPAM?
SpamAssassin, for example, can put a header in the mail giving
detailed scoring for why it thought something was SPAM.
One check that is commonly made by mail servers is to start to send
a bounce message to the From: address, stopping short of actually
sending a body. If sending the bounce fails due to not having a
mail server to send it to (no MX or A record), or the destination
server denies having such an address in response to RCPT TO:, the
mail is rejected. In other words, the server for __________ domain
had better accept:
Servers that reject MAIL FROM:<> (that is, all bounce messages) will
find that there are a lot of places that the domains they serve
can't send mail to.
Gordon L. Burditt