You see a large number of abort message entries coming from Gmail email addresses.

Products

• Messaging Gateway

Issue/Introduction

When looking at the Message Audit Log at emails from gmail.com email addresses, you notice a lot of abort message entries.

Cause

As evidenced by recent packet captures for customer seeing this issue, Google tries to send a large email despite the size specification being provided in the ESMTP response. Here is an example:

220 smtp01.x.com ESMTP Symantec Messaging Gateway
EHLO mail-xxx.google.com
250-smtp01.x.com says EHLO to 209.x.x.x:34896
250-ENHANCEDSTATUSCODES
250-SIZE 15485760
250-8BITMIME
250 PIPELINING
MAIL FROM:<[email protected]> SIZE=24814870
552 5.3.4 message size limit exceeded at MAIL FROM
RCPT TO:<[email protected]>
503 5.5.1 RCPT TO without MAIL FROM
DATA
503 5.5.1 DATA without MAIL FROM
QUIT
221 2.3.0 smtp01.x.com closing connection

The above communication showed as an abort message.

Resolution

This issue is outside the Messaging Gateway, Google's MTA is not correctly reading the SIZE parameter.