Email Attachment

Hello Jason,

The attachment size limit for the Sophos Email Appliance is configured within the Filtering Options configuration page on the appliance.  There is a number of options to chose from.  As for PureMessage this is an admin configurable item in the MTA configuration files  whether it is Postfix of Sendmail.

Hi Jason,

If you are using PureMessage for Linux with Postix, you should first fix the Message Size in MTA level....and then create (or modify) your PureMessage Policy to control the message size.

here is the parameter (from postfix.org) :

message_size_limit (default: 10240000)

    The maximal size in bytes of a message, including envelope information.

    Note: be careful when making changes. Excessively small values will result in the loss of non-delivery notifications, when a bounce message size exceeds the local or remote MTA's message size limit. 

Be careful with the conversion 7bits <--> 8bits.

e.g : to accept mails up to 25 Mo, you must fix the the size limit to 36280000 Bytes.

Luis

Hi All,

Thanks for all the advise.

I have a few email stayed in the ES100 Mail Queues for a few days already and these mail were all send to recipent using yahoo.com.sg email address and the attachment file size is around 6-8MB. I have retried to send out a few time but they still shown at the ES100 Mail Queues. Any one have similar problem and have manage to solve it can kindly advise me what is the cause.

Regards,

Jason

Sorry, I don't know ES100....

Did you check your logs ?

Jason,

I would review the maillogs and see if there were any return codes.  Otherwise please contact our support team and they will assist you with remote assistance where they can examine the mail message that is in the mail queue.

Hi Jason Wong,

As per your request, following is the log report I got it from the Mail Log:-

Policy Rule: No policy rules triggered

Deferred: For reason: legitimate

Deferred: Lost connection with mx1.mail.sg1.yahoo.com[124.108.116.109] while sending end of data -- message may be sent more than once at 2011-04-01 22:26:14

Sender: sender@mycompanydomain.com.sg

Recipient(s):

Queued: For delivery at 2011-04-01 22:36:59

Queued: For delivery at 2011-04-04 08:17:11

Sender: sender@mycompanydomain.com.sg

Recipient(s):

view log detail

2011-04-01 22:26:14 es100 postfix/backend/smtp[74931]: 57FE8360E178_D95DE66B: to=<recipient@yahoo.com.sg>, relay=mx1.mail.sg1.yahoo.com[124.108.116.109]:25, delay=16928, delays=16384/0.02/2.5/541, dsn=4.4.2, status=deferred (lost connection with mx1.mail.sg1.yahoo.com[124.108.116.109] while sending end of data -- message may be sent more than once)

2011-04-01 22:36:59 es100 postfix/backend/qmgr[33052]: 57FE8360E178_D95DE66B: from=<sender@mycompanydomain.com.sg>, size=7925901, nrcpt=1 (queue active)

2011-04-04 08:17:11 es100 postfix/backend/pickup[45216]: 2B41B360E08A_D990E07B: uid=2001 from=<sender@mycompanydomain.com.sg> orig_id=57FE8360E178_D95DE66B

2011-04-04 08:17:11 es100 postfix/backend/cleanup[66109]: 2B41B360E08A_D990E07B: message-id=

3FB92CB0B8687845936B7A2EBB820762F9B967 @ EXCHANGESERVER.MYCOMPANYDOMAIN.local

2011-04-04 08:17:11 es100 postfix/backend/qmgr[33052]: 2B41B360E08A_D990E07B: from=<sender@mycompanydomain.com.sg>, size=7926049, nrcpt=1 (queue active)

Thanks in Advance.

Jason

Hello Jason,

Lost connection with mx1.mail.sg1.yahoo.com[124.108.116.109] while sending end of data -- message may be sent more than once

this means that the ES100 received no reply on the EOD command (<CRLF>.<CRLF>). Most likely the problem is with the sink (yahoo). Is it only one recipient which is affected and is it always the same mx [124.108.116.109]?

Christian 

Hi QC,

Yes, all 5 email (just got another one) shown the same IP address, 124.108.116.109. One of the sender here tried to break the attach file into 3 files and send out seperately and it manage to send out.

Thanks for your response.

Cheers...

Jason