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Send mail thru a Qmail relay server with multiple IPs

I have setup a Qmail Relay server with a few IPs on a different provider than my usual one to use as a proxy because Hotmail banned all my company ASN, and of course my customers are not happy with ...
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877 views

Emails returned by hotmail

Some emails I send (from php) are returned by hotmail with this message: <xxxxxxx@hotmail.com>: User and password not set, continuing without authentication. 65.55.92.136 does not like ...