54.192.58.33
server-54-192-58-33.msp50.r.cloudfront.net
54.192.58.41
server-54-192-58-41.msp50.r.cloudfront.net
54.192.58.59
server-54-192-58-59.msp50.r.cloudfront.net
54.192.58.82
server-54-192-58-82.msp50.r.cloudfront.net

eu-smtp-inbound-1.mimecast.com.
eu-smtp-inbound-2.mimecast.com.

54.192.58.34
server-54-192-58-34.msp50.r.cloudfront.net
54.192.58.61
server-54-192-58-61.msp50.r.cloudfront.net
54.192.58.63
server-54-192-58-63.msp50.r.cloudfront.net
54.192.58.82
server-54-192-58-82.msp50.r.cloudfront.net

d2a4xeu7ww13gv.cloudfront.net.

54.192.58.42
server-54-192-58-42.msp50.r.cloudfront.net
54.192.58.82
server-54-192-58-82.msp50.r.cloudfront.net
54.192.58.46
server-54-192-58-46.msp50.r.cloudfront.net
54.192.58.101
server-54-192-58-101.msp50.r.cloudfront.net

d2a4xeu7ww13gv.cloudfront.net.
2600:9000:2043:a200:1d:3015:f3c0:93a1
2600:9000:2043:4200:1d:3015:f3c0:93a1
2600:9000:2043:7800:1d:3015:f3c0:93a1
2600:9000:2043:d400:1d:3015:f3c0:93a1
2600:9000:2043:3200:1d:3015:f3c0:93a1
2600:9000:2043:3000:1d:3015:f3c0:93a1
2600:9000:2043:8400:1d:3015:f3c0:93a1
2600:9000:2043:1a00:1d:3015:f3c0:93a1

d2a4xeu7ww13gv.cloudfront.net.

54.192.58.14
server-54-192-58-14.msp50.r.cloudfront.net
54.192.58.24
server-54-192-58-24.msp50.r.cloudfront.net
54.192.58.64
server-54-192-58-64.msp50.r.cloudfront.net
54.192.58.82
server-54-192-58-82.msp50.r.cloudfront.net

2600:9000:2043:2000:7:c160:bb40:93a1
2600:9000:2043:200:7:c160:bb40:93a1
2600:9000:2043:3a00:7:c160:bb40:93a1
2600:9000:2043:4c00:7:c160:bb40:93a1
2600:9000:2043:8400:7:c160:bb40:93a1
2600:9000:2043:8c00:7:c160:bb40:93a1
2600:9000:2043:a00:7:c160:bb40:93a1
2600:9000:2043:ea00:7:c160:bb40:93a1

mx00.1and1.co.uk.
mx01.1and1.co.uk.