input/output error
Holger Haas
i am experiencing the following phenomenon at one of our customers:
a mailserver ("mgwe",sendmail) on the external net receives mails, scans
them with "mailscanner" and relays them through a checkpoint fw ng to an
internal mailserver ("mgwi",i think also sendmail).
But several times a day a mail can't get delivered from external to
internal because of an "i/o" error.
Does somebody have an idea what could cause that?
I don't think the nameserver timeout is to blame, because it always
happens in the DATA-Phase.
Thank you very much,
Holger
Here is a log from "sendmail -v -q -d11" on the external mailserver.
I replaced the customers network with "TO.NET", domain with "TO.DOMAIN"
etc...
#sendmail -v -q -d11
Running /var/spool/mqueue/jAOEQihn005532 (sequence 1 of 9)
jAOEQihn005532: locked
Running /var/spool/mqueue/jAOEM9cg005161 (sequence 2 of 9)
openmailer: TCP [TO.NET.168.44]
<TO.AD...@TO.DOMAIN>... Connecting to [TO.NET.168.44] via esmtp...
220 mail ESMTP
>>>>>> EHLO mgwe.TO.DOMAIN
250-mgwi.TO.DOMAIN Hello localhost [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-EXPN
250-VERB
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-DELIVERBY
250 HELP
openmailer: MCI@0x8179244:
flags=4e087c<CACHED,ESMTP,EXPN,SIZE,8BITMIME,DSN,ENHSTAT,PIPELINED,DLVR_BY>,
errno=0, herrno=0, exitstat=0, state=2, pid=0,
maxsize=0, phase=client EHLO, mailer=esmtp,
status=(null), rstatus=(null),
host=[TO.NET.168.44], lastuse=Thu Nov 24 16:24:14 2005
>>>>>> MAIL From:<prvs=FROM.ADDRESS/0118f...@FROM.DOMAIN> SIZE=84135
250 2.1.0 <prvs=FROM.ADDRESS/0118f...@FROM.DOMAIN>... Sender ok
>>>>>> RCPT To:<TO.AD...@TO.DOMAIN>
>>>>>> DATA
250 2.1.5 <TO.AD...@TO.DOMAIN>... Recipient ok
354 Enter mail, end with "." on a line by itself
TO.DOMAIN': Name server timeout
I/O error
Running /var/spool/mqueue/jAOBfIVb022603 (sequence 3 of 9)
openmailer: TCP [TO.NET.168.44]
openmailer: MCI@0x8179244:
flags=4e087c<CACHED,ESMTP,EXPN,SIZE,8BITMIME,DSN,ENHSTAT,PIPELINED,DLVR_BY>,
errno=5, herrno=0, exitstat=74, state=0, pid=0,
maxsize=0, phase=client DATA 354, mailer=esmtp,
status=4.4.2, rstatus=(null),
host=[TO.NET.168.44], lastuse=Thu Nov 24 16:24:14 2005
I/O error: Input/output error
Running /var/spool/mqueue/jAOBfIVb022603 (sequence 3 of 9)
openmailer: TCP [TO.NET.168.44]
openmailer: MCI@0x8179244:
flags=4e087c<CACHED,ESMTP,EXPN,SIZE,8BITMIME,DSN,ENHSTAT,PIPELINED,DLVR_BY>,
errno=5, herrno=0, exitstat=74, state=0, pid=0,
maxsize=0, phase=client DATA 354, mailer=esmtp,
status=4.4.2, rstatus=(null),
host=[TO.NET.168.44], lastuse=Thu Nov 24 16:24:14 2005
I/O error: Input/output error
Running /var/spool/mqueue/jANHdSth020837 (sequence 4 of 9)
openmailer: TCP [TO.NET.168.44]
openmailer: MCI@0x8179244:
flags=4e087c<CACHED,ESMTP,EXPN,SIZE,8BITMIME,DSN,ENHSTAT,PIPELINED,DLVR_BY>,
errno=5, herrno=0, exitstat=74, state=0, pid=0,
maxsize=0, phase=client DATA 354, mailer=esmtp,
status=4.4.2, rstatus=(null),
host=[TO.NET.168.44], lastuse=Thu Nov 24 16:24:14 2005
I/O error: Input/output error
Running /var/spool/mqueue/jANHdSOI020838 (sequence 5 of 9)
openmailer: TCP [TO.NET.168.44]
openmailer: MCI@0x8179244:
flags=4e087c<CACHED,ESMTP,EXPN,SIZE,8BITMIME,DSN,ENHSTAT,PIPELINED,DLVR_BY>,
errno=5, herrno=0, exitstat=74, state=0, pid=0,
maxsize=0, phase=client DATA 354, mailer=esmtp,
status=4.4.2, rstatus=(null),
host=[TO.NET.168.44], lastuse=Thu Nov 24 16:24:14 2005
I/O error: Input/output error
and so on ...