We are using the Sophos UTM to filter emails to and from our Office365 accounts but emails inbound from one domain (paypal !!!) keep bouncing. The are the generic emails to notify us of a payment etc.
in the log we can see:
2017:02:20-11:56:07 gw1 exim-out[22881]: 2017-02-20 11:56:07 1cfmZU-0005x0-4T ** ebay@domain.org.uk P=<service@paypal.co.uk> R=static_route_hostlist T=static_smtp: SMTP error from remote mail server after end of data: host 213.199.180.170 [213.199.180.170]: 550 5.1.8 Access denied, bad outbound sender AS(41000001)
Any ideas of where I should start looking as all other mail is flowing correctly?
Thanks
Lee
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