maildirserial - ccMail Link fails

[Dirk Vleugels]

Hello,

I deliver mails from a Maildir to a dial customer via
serialmail-0.72. The customer is runninc ccMail (don't know which
version), quit yields: "221 ccMail Link to SMTP closing connection". 
The problem seems to be that the DATA submission end can't be detected
on the ccMail side (for certain mails):

Router to Mailserver (using NAT):

  0410: 64 65 72 20 63 6f 6d 69  63 73 20 6e 65 6e 6e 65  der comics nenne
  0420: 6e 2e 20 64 61 6e 6b 65  20 73 65 68 72 20 20 41  n. danke sehr  A
  0430: 41 0d 0a 0d 0a 2e 0d 0a   A...
^^^ This looks correct. The
transmission should be finished!

 IP-Packet from 192.76.144.44 to 192.168.1.2  protocol 0x6 
 TCP-Message, sourceport 54818 destinationport 25


Mailserver answer to router (resp. serialmail site) after the timeout:

000112.058997 DATA[0080]
  : 00 a0 f9 00 61 48 00 20  af e1 f4 29 08 00 45 00  aH. ...)..E.
  0010: 00 42 97 1e 40 00 1f 06  b1 74 c0 a8 01 02 c0 4c  .B..@t.L
  0020: 90 2c 00 19 d6 22 06 d9  8c e0 66 8a 43 39 50 18  .,..."f.C9P.
  0030: 1d ba 79 ba 00 00 34 35  31 20 43 6f 6e 6e 65 63  ..y...451 Connec
  0040: 74 69 6f 6e 20 54 69 6d  65 64 20 4f 75 74 0d 0a  tion Timed Out..
 IP-Packet from 192.168.1.2 to 192.76.144.44  protocol 0x6 
 TCP-Message, sourceport 25 destinationport 54818


This is a working transfer (different Mail):

server - client:

  0110: 2e 64 65 0d 0a 0d 0a 74  65 73 74 2c 69 67 6e 6f  .detest,igno
  0120: 72 65 0d 0a 0d 0a 44 69  72 6b 0d 0a 2e 0d 0a reDirk. 
 IP-Packet from 192.76.144.44 to 192.168.1.2  protocol 0x6 
 TCP-Message, sourceport 54902 destinationport 25
  sequence number 1786583507
  acknowledgement number 115347804
  offset 5 flags ACK PSH 
  window 8760 checksum 0x7f1f urgent 0

client - server:

05.930657 DATA[0073]
  : 00 a0 f9 00 61 48 00 20  af e1 f4 29 08 00 45 00  aH. ...)..E.
  0010: 00 3b c5 1e 40 00 1f 06  83 7b c0 a8 01 02 c0 4c  .;..@{.L
  0020: 90 2c 00 19 d6 76 06 e0  11 5c 6a 7d 1a cc 50 18  .,...v...\j}..P.
  0030: 20 d2 23 e4 00 00 32 35  30 20 4d 61 69 6c 20 61   .#...250 Mail a
  0040: 63 63 65 70 74 65 64 0d  0a   ccepted..   
 IP-Packet from 192.168.1.2 to 192.76.144.44  protocol 0x6 
 TCP-Message, sourceport 25 destinationport 54902
  sequence number 115347804
  acknowledgement number 1786583756
  offset 5 flags ACK PSH 
  window 8402 checksum 0x23e4 urgent 0


Both mails get delivered by qmail  sendmail without problems. I will
try serialmail-0.75 tomorrow, but i wonder if anyone else encountered
this problem 

Regards,
Dirk

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Re: 500.000+ users mailserver

[Dirk Vleugels]

Hi,

Quoting listy-dyskusyjne Krzysztof Dabrowski ([EMAIL PROTECTED]):
 Hello..
 
 As i can see my post provoked few interesting answers. At the moment
 everything looks like that hypotetical 500.000+ mailserver could be
 implemented. There are just few remaining questions. If someone knows the
 answers then please share them :)
 
 a) how one can organize an independent quota system on OS with 16 bit uids.
 How to do it fast (as it'll be checked and modified on every delivery/download

No idea. I would use some homegrown script which checks the size of the
pop mailboxes. I wouldn't want to depend on some flaky OS limitations. 
You'll never know which system call will bite you.

 b) a lot of you is proposing netapp as a filesystem sharing solution. My
 question is : does it support 32 bit uids? if it does then does it
 implements any quota system on its own? How will it interoperate with an OS
 with 16 bit uids then etc.

A 740 supports 32767 in the local passwd. I would go with a different
authentification service though. We have good experiences with LDAP.
Replication is easy.

 c) if we are using something like netapp then what network speed is
 necesary to make that 500k mailserver running smoothly (i assume netapp
 uses nfs).

Yes NFS.

Depends. With multiple ethernet devices 100mbit full duplex should be
enough if the pop3 servers are properly distributed. A NetApp supports
gigabit ethernet if needed.

Dirk

masq. all except local users ?

[Dirk Vleugels]

Hello,

i try to masq. all outgoing mail as coming from @domain.com.
Putting domain.com into control/defaulthosts works fine, but
now all local root mails leave the system (via  maildirsmtp)
as [EMAIL PROTECTED], despite a local ~alias/.qmail-root pointing
to a local user. I have a .qmail-default file containing:
| forward "$LOCAL"@domain.com 
which shouldn't be needed anymore?!? Anyways (with or without
.qmail-default), mail to root leaves the system.

Removing defaulthost (but leaving .qmail-default alone) does
put [EMAIL PROTECTED] in the delivered-to header line, but all
adresses in (from, to, cc, return-path) look still like
this: [EMAIL PROTECTED]

I wan't to archieve that _all_ outgoing mails contain adresses
of the form [EMAIL PROTECTED], but _all_ possible local 
deliveries (including root), won't leave the system.

Is this possible at all?

Puzzled,
Dirk