@all: The new host is in place and it seems everything works as it should. We plan to migrate the mailing list (including the archive etc.) within the next seven days. After the migration list traffic will come from new IPs and the SMTP service will have a new name.
You might want to update your filters to e.g. whitelist this host:
MX: mx.mailop.org
IPv4: 91.132.147.157
IPv6: 2a03:4000:37:599:d8ce:dff:fee1:81c2
Here's more information on the host:
Reverse DNS:
# dig +short -x 2a03:4000:37:599:d8ce:dff:fee1:81c2
mx.mailop.org.
# dig +short -x 91.132.147.157
mx.mailop.org.
SPF record:
# dig +short TXT mailop.org
"v=spf1 a mx ip4:91.132.147.157/32 ip6:2a03:4000:37:599:d8ce:dff:fee1:81c2/64
~all"
STARTTLS/DANE:
The SMTP service supports opportunistic TLS and offers opportunistic DANE on
the sending as well as on the receiving side:
posttls-finger: Verified TLS connection established to
mx.mailop.org[91.132.147.157]:25: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384
(256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits)
server-digest SHA256
posttls-finger: Verified TLS connection established to
mx.mailop.org[2a03:4000:37:599:d8ce:dff:fee1:81c2]:25: TLSv1.3 with cipher
TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256)
server-signature RSA-PSS (2048 bits) server-digest SHA256
Regards,
p@rick
P.S.
We plan to add DKIM, DMARC and ARC once the migration has been completed and
the dust has settled…
--
[*] sys4 AG
https://sys4.de, +49 (89) 30 90 46 64
Schleißheimer Straße 26/MG,80333 München
Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263
Vorstand: Patrick Ben Koetter, Marc Schiffbauer, Wolfgang Stief
Aufsichtsratsvorsitzender: Florian Kirstein
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Description: S/MIME cryptographic signature
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