Postfix: Trouble sending large attachments?

cayenne · l33t Joined: 17 Oct 2002 Posts: 945 Location: New Orleans

Hi all,

I've got postfix running on a dedicated sun gentoo box.

Of late, i've had problems sending large attachments. I'm using a mac as my client...

In the logs I see something like this:

Feb 19 03:18:28 xxxxxxx postfix/cleanup[19488]: 63474F5A7F: message-id=<cb02fd0e695be52c85c9bba5137925f7@xxxxxx.com>
Feb 19 03:19:16 xxxx imapd-ssl: DISCONNECTED, user=xxxx@xxxxxxx.com, ip=[xx.xx.xx.xx, headers=0, body=0
Feb 19 03:19:16 xxxx imapd-ssl: DISCONNECTED, user=xxxx@xxxxxx.com, ip=[xx.xx.xx.xx], headers=0, body=0
Feb 19 03:20:36 xxxx postfix/smtpd[19479]: lost connection after DATA from wsip-xx-xx-xx-xx-no.no.cox.net[xx.xx.xx.xx]
Feb 19 03:20:36 xxxx postfix/smtpd[19479]: disconnect from wsip-xx.xxx.xx.xx.no.no.cox.net[xx.xx.xx.xx]

I x'ed out the addresses..

But, I cannot see anything from the logs. I can send small text email no problem....but, attachments it blows on.

This particular msg. sent with one address...other ones bcc.

I followed the gentoo postfix document....mysql..etc. I've seen some pam-mysql errors

Feb 19 03:30:52 xxxx postfix/smtpd[19514]: mysql plugin couldnt connect to any host
Feb 19 03:30:52 xxxx saslauthd[5390]: pam_mysql: error: sqllog set but logtable not set
Feb 19 03:30:52 xxxx saslauthd[5390]: pam_mysql: error: sqllog set but logmsgcolumn not set
Feb 19 03:30:52 xxxx saslauthd[5390]: pam_mysql: error: sqllog set but logusercolumn not set
Feb 19 03:30:52 xxxx saslauthd[5390]: pam_mysql: error: sqllog set but loghostcolumn not set
Feb 19 03:30:52 xxxxx saslauthd[5390]: pam_mysql: error: sqllog set but logtimecolumn not set
Feb 19 03:30:52 xxxx postfix/smtpd[19514]: mysql plugin couldnt connect to any host

I only see this type thing with sending large attachments....any ideas?

cayenne
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j-m · Retired Dev Joined: 31 Oct 2004 Posts: 975

Define large... Postfix won´t send anything above 10MB in default configuration. Note that this does not mean that the attachment may have 10MB (due to encoding the real max. size could be somewhere around 6-7MB).

nobspangle · Posted: Sat Feb 19, 2005 10:58 am Post subject:

you can check the limit by sending an EHLO in a telnet session with the server, if it is 10MB add

Poppenpopper · Posted: Wed May 09, 2007 10:01 pm Post subject:

Is there a limit for the message_size_limit-option in main.cf?

When i use