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imap connection to gmail closes connection

January 15, 2014 10:37AM
I am running nginx 1.1.19 on an Ubuntu 12.04.4 64but server.

I have nginx configured to enter on port 143 and go out to 127.0.0.1:143 where it goes through stunnel to go to imap.gmail.com:993. If I talk directly to 127.0.0.1:143 (to stunnel) it works. If I talk to nginx, it authenticates, logs correct username, target IP and port, gets the Capability list and registers a successful login to the remote (gmail) imap server and then closes the connection immediately. The following is a transcript of the telnet session:

telnet nginx:143
* OK IMAP4 ready
a1 LOGIN user@example.com password
* CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE ENABLE MOVE CONDSTORE ESEARCH
a1 OK user@example.com first_name Last_name authenticated (Success)
Connection closed by foreign host.

My nginx error.log shows the following:
*5 upstream sent invalid response: "* CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE ENABLE MOVE CONDSTORE ESEARCH
a1 OK test@example.com Test User authenticated (Success)" while reading response from upstream,...

It appears to not like google's CAPABILITY line. Is it too long? Any suggestions?

Other connections through nginx/stunnel to exchange work just fine.
Subject Author Posted

imap connection to gmail closes connection

bidwell January 15, 2014 10:37AM

Re: imap connection to gmail closes connection

Maxim Dounin January 15, 2014 11:54AM

Re: imap connection to gmail closes connection

bidwell January 15, 2014 12:02PM

Re: imap connection to gmail closes connection

Maxim Dounin January 15, 2014 01:02PM



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