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False positive for message sent via Plusnet

MJN
Pro
Posts: 1,318
Thanks: 161
Fixes: 5
Registered: ‎26-08-2010

False positive for message sent via Plusnet

Hi Plusnet,

We are having trouble sending a message (double recipient) via your outbound SMTP server as it keeps getting rejected as a suspected spam/virus.

I have redacted the recipient address details but kept the message reference so would it be possible for you to investigate why this is happening?

The mail system

<[REDACTED]@gmail.com>: host relay.plus.net [212.159.9.107] said:
55249tD1v0043RPQ6h019tEu7 message rejected due to spam or virus. If
you believe this is in error please login to your portal or contact
your ISP support team. (in reply to end of DATA command)

<[REDACTED]@pt.lu>: host relay.plus.net [212.159.9.107] said: 552
49tD1v0043RPQ6h019tEu7 message rejected due to spam or virus. If
you believe this is in error please login to your portal or contact
your ISP support team. (in reply to end of DATA command)

The email being sent is written in German and doesn't contain any attachments.