Re: Mail problem

Lasse Birnbaum Jensen <[email protected]> Mon, 23 Mar 2009 21:38:11 +0100
Newsgroups gmane.org.user-groups.flug.general
Message-ID <[email protected]>
Du kan jo altid pr=F8ve at simulere hele k=F8rslen og samtidig f=F8lge al=
le=20
steps i din exim config.

Dette g=F8res ved exim -bh 130.225.128.12

S=E5 simuleres en forbindelse fra 130.225.128.12 til din exim. den kan ev=
t=20
k=F8res med -bhc istedet for -bh s=E5 foretages evt. callouts ogs=E5 (rev=
erse=20
dns lookup, rbl lookup o.s.v.)

Det giver n=E6sten samme billede som en -d+all. Men s=E5 vidt jeg husker=20
giver den lidt bedre gang i config filen. Du skal selvf=F8lgelig selv leg=
e=20
berlioz undervej og skrive smtp kommandoerne som den ville.

Hvis ikke den kommer gennem simuleringen s=E5 kan du i al fald finde=20
=E5rsagen ved ovenst=E5ende. Hvis den kommer fint igennem ligger probleme=
t=20
"p=E5 vejen" til din box. Dvs. enten p=E5 berlioz eller noget net p=E5 ve=
jen.

Mvh

Lasse Birnbaum Jensen

Martin R. Ehmsen wrote:
> Hej flug
>
> Jeg har et Exim/Netv=E6rks-problem og jeg er bange for at jeg "in over=20
> my head", s=E5 jeg h=E5ber p=E5 lidt hj=E6lp :-)
> Problemet er kort fortalt at nogle hosts ikke kan aflevere mails til=20
> min mailserver, mens andres hosts sagtens kan komme igennem uden=20
> problemer.
> Jeg har selvf=F8lgelig fors=F8gt at debugge problemet i Exim f=F8rst. O=
g=20
> f=F8lgende viser at den afsendende host godt kan komme igennem i f=F8rs=
te=20
> omgang (Exim debug output med -d+all):
>
> 08:50:50 31418 sender_fullhost =3D [130.225.128.12]
> 08:50:50 31418 sender_rcvhost =3D [130.225.128.12]
> 08:50:50 31418 Process 31418 is handling incoming connection from=20
> [130.225.128.12]
> 08:50:50 31418 host in host_lookup? yes (matched "*")
> 08:50:50 31418 looking up host name for 130.225.128.12
> 08:50:50 31418 DNS lookup of 12.128.225.130.in-addr.arpa (PTR) succeede=
d
> 08:50:50 31418 IP address lookup yielded berlioz.imada.sdu.dk
> 08:50:50 31418 gethostbyname2(af=3Dinet6) returned 4 (NO_DATA)
> 08:50:50 31418 gethostbyname2 looked up these IP addresses:
> 08:50:50 31418   name=3Dberlioz.imada.sdu.dk address=3D130.225.128.12
> 08:50:50 31418 checking addresses for berlioz.imada.sdu.dk
> 08:50:50 31418   130.225.128.12 OK
> 08:50:50 31418 sender_fullhost =3D berlioz.imada.sdu.dk [130.225.128.12=
]
> 08:50:50 31418 sender_rcvhost =3D berlioz.imada.sdu.dk ([130.225.128.12=
])
> 08:50:50 31418 set_process_info: 31418 handling incoming connection=20
> from berlioz.imada.sdu.dk [130.225.128.12]
>
> S=E5 berlioz.imada.sdu.dk kan godt lave handshake med min server og de=20
> forts=E6tter med at snakke sammen, mens min server tjekker=20
> berlioz.imada.sdu.dk i acl_smtp_connect, og derefter g=E5r forbindelsen=
=20
> i st=E5:
>
> 08:51:25 31418 delay modifier requests 0-second delay
> 08:51:25 31418 accept: condition test succeeded
> 08:51:25 31418 expanding: $smtp_active_hostname ESMTP Exim=20
> $version_number $tod_full
> 08:51:25 31418    result: ehmsen.org ESMTP Exim 4.69 Sun, 22 Mar 2009=20
> 08:51:25 +0100
> 08:51:25 31418 SMTP>> 220 ehmsen.org ESMTP Exim 4.69 Sun, 22 Mar 2009=20
> 08:51:25 +0100
> 08:51:25 31418 Process 31418 is ready for new message
> 08:51:25 31418 smtp_setup_msg entered
> 08:55:50 31418 SMTP>> 421 ehmsen.org lost input connection
> 08:55:50 31418 LOG: smtp_connection MAIN
> 08:55:50 31418   SMTP connection from berlioz.imada.sdu.dk=20
> [130.225.128.12] lost
> 08:55:50 31418 search_tidyup called
> 08:55:50 31414 child 31418 ended: status=3D0x100
>
> Som I kan se s=E5 g=E5r alt fint, set fra min servers side. Men der kom=
mer=20
> ikke mere igennem fra berlioz.imada.sdu.dk og efter 5 min (default=20
> timeout i Exim) lukker min side forbindelsen ned.
> Ovenst=E5ende giver desv=E6rre ikke meget hj=E6lp i form af hvad der sk=
ulle=20
> v=E6re galt, s=E5 jeg har ogs=E5 pr=F8vet at lave et tcpdump af samtale=
n=20
> mellem min server og berlioz.imada.sdu.dk:
>
> No.     Time        Source                Destination          =20
> Protocol Info
>       1 0.000000    130.225.128.12        192.168.1.3          =20
> TCP      52262 > smtp [SYN] Seq=3D0 Win=3D49640 Len=3D0 MSS=3D1460
>       2 0.000069    192.168.1.3           130.225.128.12       =20
> TCP      smtp > 52262 [SYN, ACK] Seq=3D0 Ack=3D1 Win=3D5840 Len=3D0 MSS=
=3D1460
>       3 0.029071    130.225.128.12        192.168.1.3          =20
> TCP      52262 > smtp [ACK] Seq=3D1 Ack=3D1 Win=3D49640 Len=3D0
>       4 35.376333   192.168.1.3           130.225.128.12       =20
> SMTP     S: 220 ehmsen.org ESMTP Exim 4.69 Sun, 22 Mar 2009 08:44:05=20
> +0100
>       5 38.374295   192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:44:05 +0100
>       6 44.371214   192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:44:05 +0100
>       7 56.365055   192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:44:05 +0100
>       8 80.352734   192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:44:05 +0100
>       9 128.342463  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:44:05 +0100
>      10 148.972585  130.225.128.12        192.168.1.3          =20
> TCP      52339 > smtp [SYN] Seq=3D0 Win=3D49640 Len=3D0 MSS=3D1460
>      11 148.972646  192.168.1.3           130.225.128.12       =20
> TCP      smtp > 52339 [SYN, ACK] Seq=3D0 Ack=3D1 Win=3D5840 Len=3D0 MSS=
=3D1460
>      12 149.002197  130.225.128.12        192.168.1.3          =20
> TCP      52339 > smtp [ACK] Seq=3D1 Ack=3D1 Win=3D49640 Len=3D0
>      13 184.309701  192.168.1.3           130.225.128.12       =20
> SMTP     S: 220 ehmsen.org ESMTP Exim 4.69 Sun, 22 Mar 2009 08:46:34=20
> +0100
>      14 187.309662  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:46:34 +0100
>      15 193.309580  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:46:34 +0100
>      16 205.309421  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:46:34 +0100
>      17 224.341160  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:44:05 +0100
>      18 229.309103  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:46:34 +0100
>      19 277.308465  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:46:34 +0100
>      20 300.005750  130.225.128.12        192.168.1.3          =20
> TCP      52262 > smtp [FIN, ACK] Seq=3D1 Ack=3D1 Win=3D49640 Len=3D0
>      21 300.006417  192.168.1.3           130.225.128.12       =20
> SMTP     S: 421 ehmsen.org lost input connection
>      22 300.035798  130.225.128.12        192.168.1.3          =20
> TCP      52262 > smtp [RST] Seq=3D2 Win=3D49640 Len=3D0
>      23 327.894813  192.168.1.3           130.225.128.12       =20
> TCP      smtp > 52339 [FIN, ACK] Seq=3D65 Ack=3D1 Win=3D5840 Len=3D0
>      24 373.307190  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:46:34 +0100
>      25 440.170753  130.225.128.12        192.168.1.3          =20
> TCP      52504 > smtp [SYN] Seq=3D0 Win=3D49640 Len=3D0 MSS=3D1460
>      26 440.170811  192.168.1.3           130.225.128.12       =20
> TCP      smtp > 52504 [SYN, ACK] Seq=3D0 Ack=3D1 Win=3D5840 Len=3D0 MSS=
=3D1460
>      27 440.199477  130.225.128.12        192.168.1.3          =20
> TCP      52504 > smtp [ACK] Seq=3D1 Ack=3D1 Win=3D49640 Len=3D0
>      28 449.018797  130.225.128.12        192.168.1.3          =20
> TCP      52339 > smtp [FIN, ACK] Seq=3D1 Ack=3D1 Win=3D49640 Len=3D0
>      29 449.018844  192.168.1.3           130.225.128.12       =20
> TCP      smtp > 52339 [ACK] Seq=3D66 Ack=3D2 Win=3D5840 Len=3D0
>      30 475.541583  192.168.1.3           130.225.128.12       =20
> SMTP     S: 220 ehmsen.org ESMTP Exim 4.69 Sun, 22 Mar 2009 08:51:25=20
> +0100
>      31 478.537785  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:51:25 +0100
>      32 484.537702  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:51:25 +0100
>      33 496.537545  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:51:25 +0100
>      34 520.537226  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:51:25 +0100
>      35 568.536588  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:51:25 +0100
>      36 664.535297  192.168.1.3           130.225.128.12       =20
> SMTP     [TCP Retransmission] S: 220 ehmsen.org ESMTP Exim 4.69 Sun,=20
> 22 Mar 2009 08:51:25 +0100
>      37 740.210240  130.225.128.12        192.168.1.3          =20
> TCP      52504 > smtp [FIN, ACK] Seq=3D1 Ack=3D1 Win=3D49640 Len=3D0
>      38 740.211014  192.168.1.3           130.225.128.12       =20
> SMTP     S: 421 ehmsen.org lost input connection
>      39 740.240275  130.225.128.12        192.168.1.3          =20
> TCP      52504 > smtp [RST] Seq=3D2 Win=3D49640 Len=3D0
>
> Her er det s=E5 at jeg er "in over my head" for jeg er ikke specielt=20
> skarp til at tyde og forst=E5 TCP. Er der nogen som har et bud p=E5=20
> hvorfor forbindelsen pludseligt forsvinder og det er altid p=E5 samme=20
> sted, nemlig lige efter acl_smtp_connect?
>
> Martin


--=20
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