>> SMTP connection from (host) [ip] lost while reading message data (header)
>> .
>
> Please don't obfuscate.
> http://www.exim.org/eximwiki/DontObfuscate
ok, sorry:
eg: SMTP connection from (Honos03) [87.97.100.8] lost while reading
message data (header)
>
>> What is it caused by and how could I fix it? :|
>> Some clients can't send data over SMTP due to this.
>
> That problem can often be caused by MTU issues. Are you using PPPOE?
no pppoe.
> http://en.wikipedia.org/wiki/Maximum_transmission_unit
>
>> Never seen this happening before upgrading to debian etch from sarge.. :|
>
> It could be that you had MTU configured properly before, and the upgrade
> broke it.
Ran through the docs, but what is a 'correct MTU', and how to check
current one?
btw traceroute looks like this:
traceroute to 87.97.100.8.pool.invitel.hu (87.97.100.8), 30 hops max,
40 byte packets
1 gw.deninet.hu (212.92.23.1) 42.490 ms 0.287 ms 48.193 ms
2 bix.invitel.hu (193.188.137.44) 6.329 ms 5.606 ms 4.965 ms
3 213-163-21-13.pool.invitel.hu (213.163.21.13) 0.372 ms 0.385 ms
0.576 ms
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
Isn't it weird?
