Re: [swinog] Bluewin SMTP server reachable from outside bluewin/swisscom?

On 2021-03-11 11:46, Jeroen Massar wrote:

So apparently there is a DNS entry for smtp.bluewin.ch, but that is not the one to use as it was apparently EOLd in 2006 or so. Thanks for offlist info that it is and this link[1] that describes:

smtpauths.bluewin.ch:465 so TLS only (which is good!)

But, see below, connect with openssl and it drops from Init7, Quickline but works from BIT.nl...

Anybody similar sightings?

PCAP attached. Connection succeeds, but TLS alert and drop....

Maybe passing through the same "load balancer" as: http://lists.swinog.ch/public/swinog/2021-March/007457.html

Greets, Jeroen