Sometime in the past 2-3 weeks, anyone sending email via verizon.net's mailserver or worldnet.att.net servers, IMail isn't receiving it.
Do you mean IMail isn't receiving it (as in it never gets saved to the queue, which could indicate a DNS problem), or that IMail isn't delivering it (which could be anti-spam, anti-virus, rules, etc.)?
Nothing in logs about any attempts either.
No "MAIL FROM: <[EMAIL PROTECTED]>" lines? If that's the case, DNS issues or problems on the remote end would be where I would start looking.
I cannot see how AT&T and Verizon would be blocking mail TO my server ip, but not FROM my server IP.
You are correct -- it is *extremely* rare for outgoing E-mail to be blocked. That would normally only happen if your IP was entered into a firewall.
Have you tried entering your E-mail address in the Mail Test tool at http://www.DNSreport.com , which points out most common DNS errors that would prevent mail delivery from being reliable?
-Scott
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