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Update for AOL and some firewalls (Scrollout F1)
because of:
telnet mailin-02.mx.aol.com 25
Response:
220-mtaig-maa03.mx.aol.com ESMTP Internet Inbound
220-AOL and its affiliated companies do not
220-authorize the use of its proprietary computers and computer
220-networks to accept, transmit, or distribute unsolicited bulk
220-e-mail sent from the internet.
220-Effective immediately:
220-AOL may no longer accept connections from IP addresses
220 which no do not have reverse-DNS (PTR records) assigned.

HELO must be send after last 220

@NonTestatum NonTestatum changed the title Update VerifyEmail.php Multiple 220- responses from AOL Dec 3, 2017
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