iPhone - FutureTG.com

to pile up in your Sent, Drafts, and Trash email folders. And it comes set to 25
messages each.
If any more messages go into those three folders, then the earlier ones are
auto-deleted from the iPhone (although not from the server on the Internet).
The idea is to keep your email stash on the phone manageable, but if you’re
not prepared, it can be somewhat alarming to discover that messages have
vanished on their own.
To see this setting, tap SettingsÆMail, Contacts, Calendars; under Mail, you
can adjust the Show item to say 25, 50, 75, 100, or 200 Recent Messages. This
feature is intended to keep the number of messages in your Inbox to a reasonable
number; most people don’t realize, however, that it also applies to the
Sent, Drafts, and Trash folders, in all of your POP and IMAP email accounts.
Can’t Send Email
It’s happened to thousands of people. You set up your POP email account
(page 150), and everything looks good. But although you can receive mail, you
can’t send it. You create an outgoing message, you tap Send. The whirlygig “I’m
thinking” cursor spins and spins, but the iPhone never sends the message.
The cause is very technical, but here’s a nicely oversimplified explanation.
When you send a piece of postal mail, you might drop it off at the post office.
It’s then sent over to the addressee’s post office in another town, and delivered
from there.
In a high-tech sort of way, the same thing happens with email. When you
send a message, it goes first to your Internet provider’s email server (central
mail computer). It’s then sent to the addressee’s mail server, and the addressee’s
email program picks it up from there.
But spammers and spyware writers became an increasing nuisance, especially
people who wrote zombies—spyware on your computer that churns
out spam without your knowledge. So the big ISPs (Internet service providers)
began fighting back in two ways—both of which can block outgoing mail
from your iPhone, too. Here’s the scoop:
• Use port 587. Ports are invisible “channels” from a computer to the
Internet. One conducts email, one conducts Web activity, and so on.
Most computers send email out on port 25.
In an effort to block zombie spam, though, the big ISPs have rigged their
networks so that mail you send from port 25 can go only to one place:
the ISPs’ own mail servers. (Most zombies attempt to send mail directly to
the addressees’ mail servers, so they’re effectively blocked.) Your iPhone
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