Prev: Outgoing mail server and BIG Yahoo email
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From: horus on 7 Jun 2010 10:56
Running /var/spool/mqueue/o540Onnr029313 (sequence 1 of 1)
<blah(a)smtp.blah.org>... Connecting to smtp.blah.org. via esmtp...
220 smtp.blah.org ESMTP Postfix
>>> EHLO blah.blah.edu
250-smtp.blah.org
250-PIPELINING
250-SIZE 20971520
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
>>> MAIL From:blah(a)smtp.blah.edu SIZE=7617263
250 2.1.0 Ok
>>> RCPT To:blah(a)smtp.blah.org
>>> DATA
250 2.1.5 Ok
354 End data with <CR><LF>.<CR><LF>
timeout writing message to smtp.blah.org.: Resource temporarily unavailable
<blah(a)smtp.blah.org>... Connecting to smtp2.blah.org. via esmtp...
<blah(a)smtp.blah.org>... Connecting to smtp3.blah.org. via esmtp...
<blah(a)smtp.blah.org>... Deferred: Connection timed out with smtp3.blah.org.
Closing connection to smtp.blah.org.

thanks ahead of time

dmc



From: horus on 7 Jun 2010 11:30
OH, if it makes a difference, this is a 64bit RHEL system.

> Running /var/spool/mqueue/o540Onnr029313 (sequence 1 of 1)
> <blah(a)smtp.blah.org>... Connecting to smtp.blah.org. via esmtp...
> 220 smtp.blah.org ESMTP Postfix
>>>> EHLO blah.blah.edu
> 250-smtp.blah.org
> 250-PIPELINING
> 250-SIZE 20971520
> 250-VRFY
> 250-ETRN
> 250-STARTTLS
> 250-AUTH LOGIN PLAIN
> 250-AUTH=LOGIN PLAIN
> 250-ENHANCEDSTATUSCODES
> 250-8BITMIME
> 250 DSN
>>>> MAIL From:blah(a)smtp.blah.edu SIZE=7617263
> 250 2.1.0 Ok
>>>> RCPT To:blah(a)smtp.blah.org
>>>> DATA
> 250 2.1.5 Ok
> 354 End data with <CR><LF>.<CR><LF>
> timeout writing message to smtp.blah.org.: Resource temporarily
> unavailable
> <blah(a)smtp.blah.org>... Connecting to smtp2.blah.org. via esmtp...
> <blah(a)smtp.blah.org>... Connecting to smtp3.blah.org. via esmtp...
> <blah(a)smtp.blah.org>... Deferred: Connection timed out with
> smtp3.blah.org.
> Closing connection to smtp.blah.org.

oh, sorry, here's the maillog view:

Jun 7 08:19:24 blah sendmail[2036]: o540Onnr029313: SMTP outgoing connect
on blah
Jun 7 08:19:24 blah sendmail[2036]: ruleset=try_tls, arg1=smtp.blah.org,
relay=smtp.blah.org, reject=550 5.7.1 <blah(a)blah.org>... do not try TLS with
smtp.blah.org [01.02.030.040]
Jun 7 08:19:24 blah sendmail[2036]: AUTH=client, relay=smtp.blah.org.,
mech=, bits=0
Jun 7 08:28:25 blah sendmail[2036]: o540Onnr029313: to=<blah(a)blah.org>,
ctladdr=<blah(a)blah.edu> (513/515), delay=3+15:03:36, xdelay=00:09:01,
mailer=esmtp, pri=15867046,relay=smt
p3.blah.org. [198.188.1.130], dsn=4.0.0, stat=Deferred: Connection timed out
with smtp3.blah.org.
>
> thanks ahead of time
>
> dmc
>
>
>


From: horus on 8 Jun 2010 21:57
ok, I have an idea that something is happening here that might include RFC
ignorance?
http://www.rfc-ref.org/RFC-TEXTS/2821/kw-crlf.html

perhaps someone could help with analysis?

thanks

-h

"horus" <horus(a)sonic.net> wrote in message
news:4c0d08b8$0$1669$742ec2ed(a)news.sonic.net...
> Running /var/spool/mqueue/o540Onnr029313 (sequence 1 of 1)
> <blah(a)smtp.blah.org>... Connecting to smtp.blah.org. via esmtp...
> 220 smtp.blah.org ESMTP Postfix
>>>> EHLO blah.blah.edu
> 250-smtp.blah.org
> 250-PIPELINING
> 250-SIZE 20971520
> 250-VRFY
> 250-ETRN
> 250-STARTTLS
> 250-AUTH LOGIN PLAIN
> 250-AUTH=LOGIN PLAIN
> 250-ENHANCEDSTATUSCODES
> 250-8BITMIME
> 250 DSN
>>>> MAIL From:blah(a)smtp.blah.edu SIZE=7617263
> 250 2.1.0 Ok
>>>> RCPT To:blah(a)smtp.blah.org
>>>> DATA
> 250 2.1.5 Ok
> 354 End data with <CR><LF>.<CR><LF>
> timeout writing message to smtp.blah.org.: Resource temporarily
> unavailable
> <blah(a)smtp.blah.org>... Connecting to smtp2.blah.org. via esmtp...
> <blah(a)smtp.blah.org>... Connecting to smtp3.blah.org. via esmtp...
> <blah(a)smtp.blah.org>... Deferred: Connection timed out with
> smtp3.blah.org.
> Closing connection to smtp.blah.org.
>
> thanks ahead of time
>
> dmc
>
>
>


From: horus on 9 Jun 2010 11:13
> I just realized I didn't read the post completely. The connection only
> times out at the DATA stage. Forget what I said before.
>
> I just tried connecting to the destination shown in your logfile, and
> things seemed to work (message accepted), except the destination server
> seemed very slow. This may be intentional, or the box is overloaded, out
> of disk space, etc. Either way, such timeouts usually indicate, if not a
> network problem, that the destination server is down or otherwise
> experiencing difficulties.
>
> Since you are trying to send a fairly large message: have you tried
> sending shorter emails there?
>
> HTH,
> Ole

Oh thank you,
file sizes are 1-8MB, and it appears to be only enclosures. eg. .pdf
or .jpg......

I am able to send those attachments from my home PC thru my ISP
to both of those blah domains w/o issues.
so I'm fairly certain that I've bungled something.

everything was working fine until about 4 weeks ago......here's my .mc

============================================================
divert(-1)dnl
dnl #
dnl # This is the sendmail macro config file for m4. If you make changes to
dnl # /etc/mail/sendmail.mc, you will need to regenerate the
dnl # /etc/mail/sendmail.cf file by confirming that the sendmail-cf package
is
dnl # installed and then performing a
dnl #
dnl # make -C /etc/mail
dnl #
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`Cosmos Mailer Appliance')dnl
OSTYPE(`linux')dnl
dnl #
dnl # default logging level is 9, you might want to set it higher to
dnl # debug the configuration
dnl #
dnl #
dnl # Uncomment and edit the following line if your outgoing mail needs to
dnl # be sent out through an external mail server:
dnl #
dnl # define(`SMART_HOST',`smtp.your.provider')
dnl #
define(`confDEF_USER_ID',``8:12'')dnl
dnl define(`confAUTO_REBUILD')dnl
define(`confTO_CONNECT', `1m')dnl
define(`confTRY_NULL_MX_LIST',true)dnl
define(`confDONT_PROBE_INTERFACES',true)dnl
define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl
define(`ALIAS_FILE', `/etc/aliases')dnl
define(`STATUS_FILE', `/var/log/mail/statistics')dnl
define(`UUCP_MAILER_MAX', `2000000')dnl
define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl
define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl
define(`confAUTH_OPTIONS', `A')dnl
dnl #
dnl # The following allows relaying if the user authenticates, and disallows
dnl # plaintext authentication (PLAIN/LOGIN) on non-TLS links
dnl #
dnl define(`confAUTH_OPTIONS', `A p y')dnl
dnl #
dnl # PLAIN is the preferred plaintext authentication method and used by
dnl # Mozilla Mail and Evolution, though Outlook Express and other MUAs do
dnl # use LOGIN. Other mechanisms should be used if the connection is not
dnl # guaranteed secure.
dnl # Please remember that saslauthd needs to be running for AUTH.
dnl #
TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN
PLAIN')dnl
dnl #
dnl # Rudimentary information on creating certificates for sendmail TLS:
dnl # cd /usr/share/ssl/certs; make sendmail.pem
dnl # Complete usage:
dnl # make -C /usr/share/ssl/certs usage
dnl #
define(`confCACERT_PATH',`/etc/ssl/certs')dnl
define(`confCACERT',`/etc/ssl/certs/ca-bundle.crt')dnl
define(`confSERVER_CERT',`/etc/ssl/certs/sendmail.pem')dnl
define(`confSERVER_KEY',`/etc/ssl/certs/sendmail.pem')dnl
define(`confCLIENT_CERT',`/etc/ssl/certs/sendmail.pem')dnl
define(`confCLIENT_KEY',`/etc/ssl/certs/sendmail.pem')dnl
define(`confCRL', `/etc/ssl/certs/revoke.crl')dnl
define(`confLOG_LEVEL', `12')dnl
dnl #
dnl # This allows sendmail to use a keyfile that is shared with OpenLDAP's
dnl # slapd, which requires the file to be readble by group ldap
dnl #
dnl define(`confDONT_BLAME_SENDMAIL',`groupreadablekeyfile')dnl
dnl #
dnl define(`confTO_QUEUEWARN', `4h')dnl
dnl define(`confTO_QUEUERETURN', `5d')dnl
define(`confQUEUE_LA', `18')dnl
define(`confREFUSE_LA', `24')dnl
define(`confTO_IDENT', `0')dnl
FEATURE(delay_checks)dnl
FEATURE(`no_default_msa',`dnl')dnl
FEATURE(`smrsh',`/usr/sbin/smrsh')dnl
FEATURE(`mailertable',`hash -o /etc/mail/mailertable.db')dnl
FEATURE(`virtusertable',`hash -o /etc/mail/virtusertable.db')dnl
FEATURE(redirect)dnl
FEATURE(always_add_domain)dnl
FEATURE(`use_cw_file')dnl
FEATURE(`use_ct_file')dnl
FEATURE(`relay_hosts_only')dnl
dnl #
dnl # The following limits the number of processes sendmail can fork to
accept
dnl # incoming messages or process its message queues to 12.) sendmail
refuses
dnl # to accept connections once it has reached its quota of child
processes.
dnl #
dnl define(`confMAX_DAEMON_CHILDREN', 12)dnl
dnl #
dnl # Limits the number of new connections per second. This caps the
overhead
dnl # incurred due to forking new sendmail processes. May be useful against
dnl # DoS attacks or barrages of spam. (As mentioned below, a per-IP address
dnl # limit would be useful but is not available as an option at this
writing.)
dnl #
dnl define(`confCONNECTION_RATE_THROTTLE', 3)dnl
dnl #
dnl # The -t option will retry delivery if e.g. the user runs over his
quota.
dnl #
FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl
FEATURE(`access_db',`hash -T<TMPF> -o /etc/mail/access.db')dnl
FEATURE(`blacklist_recipients')dnl
EXPOSED_USER(`root')dnl
dnl #
dnl # The following causes sendmail to only listen on the IPv4 loopback
address
dnl # 127.0.0.1 and not on any other network devices. Remove the loopback
dnl # address restriction to accept email from the internet or intranet.
dnl #
dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
dnl #
dnl # The following causes sendmail to additionally listen to port 587 for
dnl # mail from MUAs that authenticate. Roaming users who can't reach their
dnl # preferred sendmail daemon due to port 25 being blocked or redirected
find
dnl # this useful.
dnl #
dnl #
dnl # The following causes sendmail to additionally listen to port 465, but
dnl # starting immediately in TLS mode upon connecting. Port 25 or 587
followed
dnl # by STARTTLS is preferred, but roaming clients using Outlook Express
can't
dnl # do STARTTLS on ports other than 25. Mozilla Mail can ONLY use STARTTLS
dnl # and doesn't support the deprecated smtps; Evolution <1.1.1 uses smtps
dnl # when SSL is enabled-- STARTTLS support is available in version 1.1.1.
dnl #
dnl # For this to work your OpenSSL certificates must be configured.
dnl #
DAEMON_OPTIONS(`Port=smtps, Name=TLSMTA, M=s')dnl
dnl #
dnl # The following causes sendmail to additionally listen on the IPv6
loopback
dnl # device. Remove the loopback address restriction listen to the network.
dnl #
dnl DAEMON_OPTIONS(`port=smtp,Addr=::1, Name=MTA-v6, Family=inet6')dnl
dnl #
dnl # enable both ipv6 and ipv4 in sendmail:
dnl #
dnl DAEMON_OPTIONS(`Name=MTA-v4, Family=inet, Name=MTA-v6, Family=inet6')
dnl #
dnl # We strongly recommend not accepting unresolvable domains if you want
to
dnl # protect yourself from spam. However, the laptop and users on computers
dnl # that do not have 24x7 DNS do need this.
dnl #
#dnl FEATURE(`accept_unresolvable_domains')dnl
dnl #
#dnl FEATURE(`relay_based_on_MX')dnl
dnl #
dnl # Also accept email sent to "localhost.localdomain" as local email.
dnl #
LOCAL_DOMAIN(`localhost.localdomain')dnl
dnl #
dnl # The following example makes mail from this host and any additional
dnl # specified domains appear to be sent from mydomain.com
dnl #
MASQUERADE_AS(`blah.blah.edu')dnl
dnl #
dnl # masquerade not just the headers, but the envelope as well
dnl #
FEATURE(masquerade_envelope)dnl
FEATURE(allmasquerade)dnl
dnl #
dnl # masquerade not just @mydomainalias.com, but @*.mydomainalias.com as
well
dnl #
dnl FEATURE(masquerade_entire_domain)dnl
dnl #
MASQUERADE_DOMAIN(localhost)dnl
MASQUERADE_DOMAIN(localhost.localdomain)dnl
MASQUERADE_DOMAIN(mydomainalias.com)dnl
MASQUERADE_DOMAIN(mydomain.lan)dnl
dnl #INPUT_MAIL_FILTER(`clamav', `S=local:/var/run/clamav-milter.sock, F=T,
T=S:4m;R:4m')
FEATURE(`enhdnsbl', `bl.spamcop.net', `"Spam blocked see:
http://spamcop.net/bl.shtml?"$&{client_addr}', `t')dnl
FEATURE(`dnsbl',`sbl.spamhaus.org',`Rejected - see
http://www.spamhaus.org')dnl
FEATURE(`dnsbl',`dob.sibl.support-intelligence.net',`Rejected - see
http://support-intelligence.com/day-old-bread.html ')dnl
FEATURE(`dnsbl',`combined.njabl.org',`Message from $&{client_addr}
rejected - see http://njabl.org/lookup?$&{client_addr}')dnl
FEATURE(`dnsbl',`rhsbl.ahbl.org',`Rejected - see http://www.ahbl.org ')dnl
FEATURE(`dnsbl',`ix.dnsbl.manitu.net',`Reject - see
http://www.dnsbl.manitu.net/ ')dnl
MAILER(smtp)dnl
MAILER(procmail)dnl

=============================================================================================================

the only thing I've really done as of late is to add the last dnsbl of
manitu.net..........

thanks ahead of time.

-h


From: horus on 9 Jun 2010 11:22
also, I was able to nab the following:

../o58Fg7gi013561 smtp.blah.org.: client DATA 354

so am I correct in thinking that their server has seen the final CRLF?

and since the timeouts appear to be alligned with the max. settings
perhaps there's another CRLF in the stream that kills the EOM concept?

I dunno, I'm a little lost here.

;-\


"Ole Hansen" <ole.at.redvw.com(a)foo.net> wrote in message
news:2sNPn.46364$Ak3.33211(a)newsfe16.iad...
> Ole Hansen wrote:
>> horus wrote:
>>> ok, I have an idea that something is happening here that might include
>>> RFC
>>> ignorance?
>>> http://www.rfc-ref.org/RFC-TEXTS/2821/kw-crlf.html
>>>
>>> perhaps someone could help with analysis?
>>>
>>> thanks
>>>
>>> -h
>>>
>>> "horus" <horus(a)sonic.net> wrote in message
>>> news:4c0d08b8$0$1669$742ec2ed(a)news.sonic.net...
>>>> Running /var/spool/mqueue/o540Onnr029313 (sequence 1 of 1)
>>>> <blah(a)smtp.blah.org>... Connecting to smtp.blah.org. via esmtp...
>>>> 220 smtp.blah.org ESMTP Postfix
>>>>>>> EHLO blah.blah.edu
>>>> 250-smtp.blah.org
>>>> 250-PIPELINING
>>>> 250-SIZE 20971520
>>>> 250-VRFY
>>>> 250-ETRN
>>>> 250-STARTTLS
>>>> 250-AUTH LOGIN PLAIN
>>>> 250-AUTH=LOGIN PLAIN
>>>> 250-ENHANCEDSTATUSCODES
>>>> 250-8BITMIME
>>>> 250 DSN
>>>>>>> MAIL From:blah(a)smtp.blah.edu SIZE=7617263
>>>> 250 2.1.0 Ok
>>>>>>> RCPT To:blah(a)smtp.blah.org
>>>>>>> DATA
>>>> 250 2.1.5 Ok
>>>> 354 End data with <CR><LF>.<CR><LF>
>>>> timeout writing message to smtp.blah.org.: Resource temporarily
>>>> unavailable
>>>> <blah(a)smtp.blah.org>... Connecting to smtp2.blah.org. via esmtp...
>>>> <blah(a)smtp.blah.org>... Connecting to smtp3.blah.org. via esmtp...
>>>> <blah(a)smtp.blah.org>... Deferred: Connection timed out with
>>>> smtp3.blah.org.
>>>> Closing connection to smtp.blah.org.
>>>>
>>>> thanks ahead of time
>>>>
>>>> dmc
>>>>
>>>>
>>>>
>>>
>>
>> It looks like sendmail cannot connect to smtp.blah.org. The destination
>> may be down, or there is a networking problem. To test connectivity, do
>>
>> telnet smtp.blah.org 25
>>
>> from the machine where sendmail is running. If you can't connect, my
>> first guess would be that outgoing port 25 is blocked. If you run this
>> at home or at a university, your ISP probably blocks this port.
>>
>> HTH,
>> Ole
>
> I just realized I didn't read the post completely. The connection only
> times out at the DATA stage. Forget what I said before.
>
> I just tried connecting to the destination shown in your logfile, and
> things seemed to work (message accepted), except the destination server
> seemed very slow. This may be intentional, or the box is overloaded, out
> of disk space, etc. Either way, such timeouts usually indicate, if not a
> network problem, that the destination server is down or otherwise
> experiencing difficulties.
>
> Since you are trying to send a fairly large message: have you tried
> sending shorter emails there?
>
> HTH,
> Ole


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