Bug #270: IMAP4 gmail connection failure - Sylpheed

Bug #270

IMAP4 gmail connection failure

Added by Andrew Savchenko over 5 years ago. Updated 2 months ago.

Status:

New

Priority:

Normal

Assignee:

Hiroyuki Yamamoto

Category:

LibSylph

Target version:

3.5

Start date:

02/09/2017

Due date:

% Done:

Estimated time:

Description

Hi,

After setting up IMAP4 account for gmail sylpheed fails to connect.
I tried both wizard and manual configuration. POP3 works fine.
I can successfully connect to imap.gmail.com:993 from the same host
using openssl s_client, so something is wrong with sylpheed.

Sylpheed version is 3.5.1 on Gentoo.

From sylpheed's log window:

* creating IMAP4 connection to imap.gmail.com:993 ...
** LibSylph-WARNING: [11:03:53] Can't connect to IMAP4 server: imap.gmail.com:993

** Can't connect to IMAP4 server: imap.gmail.com:993
** LibSylph-WARNING: [11:03:53] Could not establish IMAP connection.

** Could not establish IMAP connection.

From tcpdump (client ip renamed):

11:03:43.024758 IP local.ip.53654 > 64.233.164.108.993: Flags [S], seq 1460861922, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
11:03:43.024947 IP local.ip.44854 > 64.233.164.109.993: Flags [S], seq 3492314402, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
11:03:43.298581 IP 64.233.164.108.993 > local.ip.53654: Flags [S.], seq 3085423617, ack 1460861923, win 42900, options [mss 1052,nop,nop,sackOK,nop,wscale 7], length 0
11:03:43.298667 IP local.ip.53654 > 64.233.164.108.993: Flags [R], seq 1460861923, win 0, length 0
11:03:43.298733 IP 64.233.164.109.993 > local.ip.44854: Flags [S.], seq 1175239981, ack 3492314403, win 42900, options [mss 1052,nop,nop,sackOK,nop,wscale 7], length 0
11:03:43.298783 IP local.ip.44854 > 64.233.164.109.993: Flags [R], seq 3492314403, win 0, length 0
11:03:53.126386 IP local.ip.53658 > 64.233.164.108.993: Flags [S], seq 1677838290, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
11:03:53.126546 IP local.ip.44858 > 64.233.164.109.993: Flags [S], seq 3408030408, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
11:03:53.399837 IP 64.233.164.109.993 > local.ip.44858: Flags [S.], seq 1752631694, ack 3408030409, win 42900, options [mss 1052,nop,nop,sackOK,nop,wscale 7], length 0
11:03:53.399954 IP local.ip.44858 > 64.233.164.109.993: Flags [R], seq 3408030409, win 0, length 0
11:03:53.400023 IP 64.233.164.108.993 > local.ip.53658: Flags [S.], seq 174296593, ack 1677838291, win 42900, options [mss 1052,nop,nop,sackOK,nop,wscale 7], length 0
11:03:53.400059 IP local.ip.53658 > 64.233.164.108.993: Flags [R], seq 1677838291, win 0, length 0

I have no idea why Sylpheed sends RST here...

Files

gmail.imap.log (4.41 KB) gmail.imap.log		Andrew Savchenko, 08/19/2018 11:11 PM
openssl.log (4.4 KB) openssl.log		Andrew Savchenko, 08/19/2018 11:12 PM

Updated by Hiroyuki Yamamoto over 5 years ago

Please show the output with --debug option.

By the way, I can successfully connect to imap.gmail.com:993 on Windows 7 and Ubuntu 14.04.
(only tested via SOCKS5 server, though)

Updated by Andrew Savchenko almost 4 years ago

File gmail.imap.log gmail.imap.log added
File openssl.log openssl.log added

Hi! Tried with sylpheed-3.7 and openssl-1.0.2o on Gentoo Linux, the problem is still here.

See attached sylheed --debug output and openssl s_client output.

Updated by Antonio Ospite almost 4 years ago

Andrew Savchenko wrote:

Hi! Tried with sylpheed-3.7 and openssl-1.0.2o on Gentoo Linux, the problem is still here.

Connecting to imap.gmail.com:993 works just fine on Debian unstable (Sylpheed-3.7, libssl-1.1.0h-4):

LibSylph-Message: 10:07:12.055: creazione della connessione IMAP4 a imap.gmail.com:993 ...

sock_connect_async_thread_wait: waiting thread
Reloading /etc/resolv.conf
sock_connect_async_func: connected
...

Maybe it's something on your system after all.

Ciao,
Antonio

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