Further information:

The sender also got the following message from his exchange mailserver when trying to send to our mailserver:

Your message contains invalid characters (bare line feed characters) which the email servers at ......com don't support


On 8/28/2022 12:45 PM, Jeff Koch wrote:

Never heard of this before but an email sender to our mailserver got the following error message:

550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT

Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ?



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