Am 12.07.2012 14:01, schrieb Dr Andrew C Aitchison:
On Thu, 12 Jul 2012, Cyborg wrote:
is there an option to activate a SMTP log to see what a client sends
to the server if TLS is active?
normally i just use tcpdump to capture the protocol, but with tls
thats not an option.
Any ideas?
Is the client under your control ?
If so you could try pointing it at a dummy server built with
openssl s_server
- that assumes that the problem isn't too deep inside the smtp
session.
No , let assume it's an external MTA you do not know anything about and
the admin there does not support you in any way
I stumpled about it as i saw this:
2012-07-12 11:07:53 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:08:02 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:08:10 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:08:18 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:08:27 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:08:35 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:08:43 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:08:52 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:09:00 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:09:08 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:09:17 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
2012-07-12 11:09:25 SMTP call from
ths-186-209-0-14.v4.thsprovider.com.br [186.209.0.14] dropped: too many
syntax or protocol errors (last command was "AUTH LOGIN")
It's a spammer, i know, but it would be cool to have a debug option to
see what he does, or what a regular sender wanted to do.
best regards,
Marius Schwarz
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