81B4
SMTP timeout
Vadim Rapp —Sat, 11/05/2011 - 08:18
Please increase SMTP timeout when sending email. Per RFC 2821, 4.5.3.2, it should be 5 minutes. It's OK to time out soon if connection is not established, but once it's established, it should wait up to 5 minutes for the 220.
In fact, an artificial delay before sending initial 220 message is one of practical anti-spam measures, and currently SM can't send to the servers that are using it, such as xwall.
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