Re: [exim] remote MX does not support STARTTLS

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Autor: Bill Cole
Data:  
Dla: Christian Eyrich via Exim-users
Temat: Re: [exim] remote MX does not support STARTTLS
After Jeremy pointed out that they didn't even try STARTTLS, I looked
closer and noticed something odd...


On 22 Sep 2020, at 12:10, Christian Eyrich via Exim-users wrote:

> Thing is that my mail server does support STARTTLS and also advertises
> this which I verify in the Exim debug log and was also record with
> tshark:
>
>     20 212.227.15.19 → 94.16.119.13 SMTP 85 C: EHLO mout.gmx.net
>     21 94.16.119.13 → 212.227.15.19 SMTP 224 S: 
> 250-mail.eyrich-net.org: Hello mout.gmx.net [212.227.15.19] | 250-SIZE 
> 52428800 | 250-8BITMIME | 250-PIPELINING | 250-CHUNKING | 250-STARTTLS 
> | 250-PRDR | 250 HELP
>     22 212.227.15.19 → 94.16.119.13 TCP 66 41705 → 25 [FIN, ACK] 
> Seq=20 Ack=228 Win=64128 Len=0 TSval=3976249530 TSecr=307582370


Why is your server setting the FIN flag on that packet? I'm pretty sure
that would cause anyone to hang up.


--
Bill Cole
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(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
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