[Dovecot] STARTTLS problem

[Matthias Andree]

Charles Marcus schrieb:
> On 7/29/2009, Steffen Kaiser (skdovecot at smail.inf.fh-brs.de) wrote:
>> Do you have a Cisco Firewall/IDS or a software firewall running
>> between your client and Dovecot? If so, try to disable it for a test.
>>
>> Some firewalls don't understand that after STARTTLS they have to stop
>> listening / checking the connection.
> 
> If its a Cisco PIX, diable the 'smtp fixup' crap that breaks smtp...
> 

What has the Cisco PIX "smtp fixup" feature got to do with IMAP STARTTLS?