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A caution on MobileMe outbound email domain filtering Internet
This is a hint regarding a serious problem for MobileMe users: Outgoing mail via smtp.me.com may not actually be sent if it is sent to certain domains. If a message is caught in this domain filter, it is silently dropped without notification to the user. None of the recipients of the message will receive it, even if they are not in the filtered domain. This problem occurs with mail sent through Apple's Mail app, on the iPhone or on Mac computers. It does not happen when sending via the MobileMe webmail interface. So far, only spamcop.net has been identified as a domain filtered by smtp.me.com, but there may be others.

This problem is testable and repeatable as of this writing; you can test it yourself as follows. On a Mac or iPhone, use Mail to create a new message using your MobileMe account. In the To field, put support@spamcop.net, in the CC field, enter a valid personal email address, and in the Subject field, put test, then send the message. You will not receive the cc message, and you will not receive an acknowledgment from spamcop.net. Try sending from a non MobileMe account; you will receive both very quickly.

More discussion of the problem can be found in this thread on Apple's discussions site. This has been happening for months, apparently since the transition from mac.com. The problem has been reported to Apple, and apparently some in frontline support are aware of it, but others are not. In the meantime, all MobileMe users should be aware that their outgoing mail is apparently filtered by domain. If you're sending to a spamcop.net address, be aware that the mail will not be sent to any recipient, nor will you be notified of the problem.

[robg adds: I can confirm this is still happening as of this morning.]
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A caution on MobileMe outbound email domain filtering
Authored by: damacintosh on Dec 06, '08 03:40:37PM

I just tested it and I DID receive the cc to my other email address. Sent from my MobileMe account using Mail.app, Mac OS X 10.4.11. The cc was to my gmail account.



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A caution on MobileMe outbound email domain filtering
Authored by: chyna4xena on Dec 07, '08 03:25:29PM

I am guessing this is intentional, not a bug. Apple are probably worried about whether their site will be blacklisted if many users forward spam and so spamcop receives a bulk lot all from the same me.com domain. I don't know if that is a genuine possibility or not, but it seems a bit to singular and arbitrary for this to be a bug.



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A caution on MobileMe outbound email domain filtering
Authored by: azchipka on Dec 07, '08 11:13:59PM

I should be noted that this also occurs with the installation of PGP Desktop 9.x this is caused by PGP taking over the SSL sending process and the mac.com / me.com servers seeing it as an invalid send.



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A caution on MobileMe outbound email domain filtering
Authored by: board5ter on Dec 08, '08 11:38:30AM

I was having this problem.

I can confirm that mails to spamcop.net are now working OK from MobileMe (as of this afternoon).

It appears to have been fixed today!



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