Specifically it mentioned:
'A typical user might lose anywhere from a legitimate message every few months to as many as five a week...'
"Blame the mishap on increasingly aggressive spam controls employed by Verizon and other e-mail operators.
As spammers identify new tricks for sneaking their junk past software sentinels, service providers' technical parries could put even more legitimate mail at risk."
"Bruce Gingery, a security consultant in Cheyenne, Wyo., says users should simply get used to losing mail."
"Even though people are relying more and more on e-mail, e-mail was never designed as a guaranteed delivery medium," Gingery said.
"Service providers, he said, are only required to make a "best effort" - a term left open to wide interpretation among mail providers."
Full story:
http://hosted.ap.org/dynamic/stories/E/E_MAIL_RELIABILITY?SITE=IDBOI&SECTION=US&TEMPLATE=DEFAULT
Tom C.