Hi Team, Does anyone have experience with subdomains being rejected by extmail.bigpond.com? We have having problem with emails from subdomains hosted at O365 being rejected by bigpond.com.
e.g. - mail from @somedomain.org.au is OK - mail from @sub1.somedomain.org.au during mail from results in 550 5.7.1 em...@sub1.somedomain.org.au<mailto:em...@sub1.somedomain.org.au> Sender domain rejected. IB302 - mail from @sub2.somedomain.org.au is accepted during mail from It seems to me that sub1.somedomain.org.au is specifically blacklisted. It is not listed any known RBL though accordingly to mxtoolbox.com or senderbase. I see no way to getting a domain delisted in Bigpond. Any help is much appreciated. Thanks and Regards John
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