[fetchmail-devel] 6.2.6 fails where 6.2.5 was OK

[David G. <da...@dg...>]

Hi

I'm upgrading from 6.2.5 to 6.2.6 and I've encountered a possible bug 
where 6.2.6 resends a CAPA challenge even when the server doesn't 
understand it. The ISP is a major UK one.

Matthias asked me to use the code from here to check another bug (this 
was an embarrisingly long time ago)
http://home.pages.de/~mandree/tmp/fetchmail-6.2.6.tar.bz2

I was going to hack on the code but thought I'd check first so...
Is this a known issue? Is this code up-to-date?

config:
1. OS: Linux RedHat 7.3 kernel 2.6.6
2. gcc version 2.96 20000731 (Red Hat Linux 7.3 2.96-110)
3. below
4. forwarding to lmtp listener on cyrus 2.2.3 (bounce goes to SMTP exim 
4.2)



here's a working 6.2.5 behaviour - notice that when it gets an ERR to 
the CAPA challenge it skips it (the CAPA) on the repoll:

fetchmail: 6.2.5 querying pop.freeserve.net (protocol POP3) at Fri 18 
Mar 2005 06:44:29 PM GMT: poll started
fetchmail: POP3< +OK connected to pop3 on 3212
fetchmail: POP3> CAPA
fetchmail: POP3< -ERR unknown command
fetchmail: unknown command
fetchmail: Repoll immediately on 
da...@in...@pop.freeserve.com
fetchmail: POP3< +OK connected to pop3 on 3212
fetchmail: POP3> USER da...@in...
fetchmail: POP3< +OK name is a valid mailbox
fetchmail: POP3> PASS *
fetchmail: POP3< +OK user exist with that password
fetchmail: selecting or re-polling default folder
fetchmail: POP3> STAT
fetchmail: POP3< +OK 1 2518
1 message for da...@in... at pop.freeserve.net (2518 
octets).
fetchmail: POP3> LIST 1
fetchmail: POP3< +OK 1 2518
fetchmail: POP3> RETR 1
fetchmail: POP3< +OK Message follows
reading message da...@in...@pop.freeserve.com:1 of 1 
(2518 octets)
About to rewrite Return-Path: <ka...@em...>
Rewritten version is Return-Path: <ka...@em...>

About to rewrite From: "Scotty Akers" <ka...@em...>
Rewritten version is From: "Scotty Akers" <ka...@em...>

About to rewrite To: da...@dg...
Rewritten version is To: da...@dg...

fetchmail: LMTP< 220 willow LMTP Cyrus v2.2.3 ready
fetchmail: LMTP> LHLO localhost
fetchmail: SMTP< 250-willow
fetchmail: SMTP< 250-8BITMIME
fetchmail: SMTP< 250-ENHANCEDSTATUSCODES
fetchmail: SMTP< 250-PIPELINING
fetchmail: SMTP< 250-SIZE
fetchmail: SMTP< 250-AUTH EXTERNAL
fetchmail: SMTP< 250 IGNOREQUOTA
fetchmail: forwarding to /var/imap/socket/lmtp
fetchmail: LMTP> MAIL FROM:<ka...@em...> SIZE=2518
fetchmail: LMTP< 250 2.1.0 ok
fetchmail: LMTP> RCPT TO:<da...@dg...>
fetchmail: LMTP< 250 2.1.5 ok
fetchmail: LMTP> DATA
fetchmail: LMTP< 354 go ahead
#***************************fetchmail: LMTP>. (EOM)
fetchmail: LMTP< 250 2.1.5 Ok
 flushed
fetchmail: POP3> DELE 1
fetchmail: POP3< +OK message deleted
fetchmail: POP3> QUIT
fetchmail: POP3< +OK
fetchmail: 6.2.5 querying pop.freeserve.net (protocol POP3) at Fri 18 
Mar 2005 06:44:48 PM GMT: poll completed



on 6.2.6, same config:
fetchmail: 6.2.6 querying pop.freeserve.net (protocol POP3) at Fri 18 
Mar 2005 06:42:42 PM GMT: poll started
fetchmail: POP3< +OK connected to pop3 on 3013
fetchmail: POP3> CAPA
fetchmail: POP3< -ERR unknown command
fetchmail: unknown command
fetchmail: Repoll immediately on 
da...@in...@pop.freeserve.com
fetchmail: POP3< +OK connected to pop3 on 3212
fetchmail: POP3> CAPA
fetchmail: POP3< -ERR unknown command
fetchmail: unknown command
fetchmail: Repoll immediately on 
da...@in...@pop.freeserve.com
fetchmail: POP3< +OK connected to pop3 on 3114
fetchmail: POP3> CAPA
fetchmail: POP3< -ERR unknown command
fetchmail: unknown command
fetchmail: Repoll immediately on 
da...@in...@pop.freeserve.com
fetchmail: POP3< +OK connected to pop3 on 3013
fetchmail: POP3> CAPA
fetchmail: POP3< -ERR unknown command
fetchmail: unknown command
fetchmail: Repoll immediately on 
da...@in...@pop.freeserve.com
fetchmail: POP3< +OK connected to pop3 on 3114
fetchmail: POP3> CAPA
fetchmail: POP3< -ERR unknown command
fetchmail: unknown command
fetchmail: Repoll immediately on 
da...@in...@pop.freeserve.com


this hangs forever.

David


More config:

set syslog
set postmaster "da...@dg..."
set nobouncemail
set properties ""
set daemon 180
set idfile /var/run/fetchmail.ids

# tracepolls: Insert headers with pop3 acc info...


# fetchall: Sometimes messages are marked 'seen' if e.g. a fetchmail 
fails due
# to network dropping. This makes sure they're all retrieved:

# The ukfsn accounts
poll pop3.ukfsn.org with proto POP3 tracepolls
    user 'dgreaves' there with password 'xxxxxxxx' is da...@dg... 
here options fetchal
l lmtp smtp /var/imap/socket/lmtp expunge 30
    antispam 571 550 501 554
    user 'de...@at...' there with password 'xxxxxxxxxxx' 
is de...@dg...
here options fetchall lmtp smtp /var/imap/socket/lmtp expunge 30
    antispam 571 550 501 554
    user 'de...@dg...' there with password 'xxxxxxxxxxxx' is 
de...@dg... here opt
ions fetchall lmtp smtp /var/imap/socket/lmtp expunge 30
    antispam 571 550 501 554

# Old freeserve account - mainly spam now
poll pop.freeserve.net with proto POP3 tracepolls
    user 'da...@in...' there with password 'xxxxxxxxxx' 
is da...@dg... h
ere options fetchall lmtp smtp /var/imap/socket/lmtp expunge 30
    antispam 571 550 501 554
    user 'de...@in...' there with password 'xxxxxxxxx' 
is de...@dg...
 here options fetchall lmtp smtp /var/imap/socket/lmtp expunge 30
    antispam 571 550 501 554


# /usr/bin/fetchmail -V -v -v -f /etc/fetchmailrc
This is fetchmail release 6.2.6+NLS
Fallback MDA: (none)
Linux willow 2.6.6 #1 Wed Jun 2 12:15:21 BST 2004 i586 unknown
Taking options from command line and /etc/fetchmailrc
Poll interval is 180 seconds
Idfile is /var/run/fetchmail.ids
Progress messages will be logged via syslog
Fetchmail will forward misaddressed multidrop messages to 
da...@dg....
Fetchmail will direct error mail to the postmaster.
Options for retrieving from dgr...@po...:
  True name of server is pop3.ukfsn.org.
  This host will be queried when no host is specified.
  Password = "xxxxxxxxxx".
  Protocol is POP3 (using default port).
  All available authentication methods will be tried.
  Server nonresponse timeout is 300 seconds (default).
  Default mailbox selected.
  All messages will be retrieved (--all on).
  Fetched messages will not be kept on the server (--keep off).
  Old messages will not be flushed before message retrieval (--flush off).
  Rewrite of server-local addresses is enabled (--norewrite off).
  Carriage-return stripping is disabled (stripcr off).
  Carriage-return forcing is disabled (forcecr off).
  Interpretation of Content-Transfer-Encoding is enabled (pass8bits off).
  MIME decoding is disabled (mimedecode off).
  Idle after poll is disabled (idle off).
  Nonempty Status lines will be kept (dropstatus off)
  Delivered-To lines will be kept (dropdelivered off)
  No received-message limit (--fetchlimit 0).
  Fetch message size limit is 100 (--fetchsizelimit 100).
  Do binary search of UIDs during 9 out of 10 polls (--fastuidl 10).
  No SMTP message batch limit (--batchlimit 0).
  Deletion interval between expunges forced to 30 (--expunge 30).
  Messages will be LMTP-forwarded to: /var/imap/socket/lmtp
  Recognized listener spam block responses are: 571 550 501 554
  No pre-connection command.
  No post-connection command.
  Single-drop mode: 1 local name(s) recognized.
        da...@dg...
  No interface requirement specified.
  No monitor interface specified.
  No plugin command specified.
  No plugout command specified.
  No UIDs saved from this host.
  Poll trace information will be added to the Received header.
Options for retrieving from de...@at...@pop3.ukfsn.org:
  True name of server is pop3.ukfsn.org.
  This host will be queried when no host is specified.
  Password = "xxxxxxxx".
  Protocol is POP3 (using default port).
  All available authentication methods will be tried.
  Server nonresponse timeout is 300 seconds (default).
  Default mailbox selected.
  All messages will be retrieved (--all on).
  Fetched messages will not be kept on the server (--keep off).
  Old messages will not be flushed before message retrieval (--flush off).
  Rewrite of server-local addresses is enabled (--norewrite off).
  Carriage-return stripping is disabled (stripcr off).
  Carriage-return forcing is disabled (forcecr off).
  Interpretation of Content-Transfer-Encoding is enabled (pass8bits off).
  MIME decoding is disabled (mimedecode off).
  Idle after poll is disabled (idle off).
  Nonempty Status lines will be kept (dropstatus off)
  Delivered-To lines will be kept (dropdelivered off)
  No received-message limit (--fetchlimit 0).
  Fetch message size limit is 100 (--fetchsizelimit 100).
  Do binary search of UIDs during 9 out of 10 polls (--fastuidl 10).
  No SMTP message batch limit (--batchlimit 0).
  Deletion interval between expunges forced to 30 (--expunge 30).
  Messages will be LMTP-forwarded to: /var/imap/socket/lmtp
  Recognized listener spam block responses are: 571 550 501 554
  No pre-connection command.
  No post-connection command.
  Single-drop mode: 1 local name(s) recognized.
        de...@dg...
  No interface requirement specified.
  No monitor interface specified.
  No plugin command specified.
  No plugout command specified.
  No UIDs saved from this host.
  No poll trace information will be added to the Received header.
.
Options for retrieving from de...@dg...@pop3.ukfsn.org:
  True name of server is pop3.ukfsn.org.
  This host will be queried when no host is specified.
  Password = "xxxxxxxxx".
  Protocol is POP3 (using default port).
  All available authentication methods will be tried.
  Server nonresponse timeout is 300 seconds (default).
  Default mailbox selected.
  All messages will be retrieved (--all on).
  Fetched messages will not be kept on the server (--keep off).
  Old messages will not be flushed before message retrieval (--flush off).
  Rewrite of server-local addresses is enabled (--norewrite off).
  Carriage-return stripping is disabled (stripcr off).
  Carriage-return forcing is disabled (forcecr off).
  Interpretation of Content-Transfer-Encoding is enabled (pass8bits off).
  MIME decoding is disabled (mimedecode off).
  Idle after poll is disabled (idle off).
  Nonempty Status lines will be kept (dropstatus off)
  Delivered-To lines will be kept (dropdelivered off)
  No received-message limit (--fetchlimit 0).
  Fetch message size limit is 100 (--fetchsizelimit 100).
  Do binary search of UIDs during 9 out of 10 polls (--fastuidl 10).
  No SMTP message batch limit (--batchlimit 0).
  Deletion interval between expunges forced to 30 (--expunge 30).
  Messages will be LMTP-forwarded to: /var/imap/socket/lmtp
  Recognized listener spam block responses are: 571 550 501 554
  No pre-connection command.
  No post-connection command.
  Single-drop mode: 1 local name(s) recognized.
        de...@dg...
  No interface requirement specified.
  No monitor interface specified.
  No plugin command specified.
  No plugout command specified.
  No UIDs saved from this host.
  No poll trace information will be added to the Received header.
.
Options for retrieving from da...@in...@pop.freeserve.net:
  True name of server is pop.freeserve.net.
  This host will be queried when no host is specified.
  Password = "xxxxxxxx".
  Protocol is POP3 (using default port).
  All available authentication methods will be tried.
  Server nonresponse timeout is 300 seconds (default).
  Default mailbox selected.
  All messages will be retrieved (--all on).
  Fetched messages will not be kept on the server (--keep off).
  Old messages will not be flushed before message retrieval (--flush off).
  Rewrite of server-local addresses is enabled (--norewrite off).
  Carriage-return stripping is disabled (stripcr off).
  Carriage-return forcing is disabled (forcecr off).
  Interpretation of Content-Transfer-Encoding is enabled (pass8bits off).
  MIME decoding is disabled (mimedecode off).
  Idle after poll is disabled (idle off).
  Nonempty Status lines will be kept (dropstatus off)
  Delivered-To lines will be kept (dropdelivered off)
  No received-message limit (--fetchlimit 0).
  Fetch message size limit is 100 (--fetchsizelimit 100).
  Do binary search of UIDs during 9 out of 10 polls (--fastuidl 10).
  No SMTP message batch limit (--batchlimit 0).
  Deletion interval between expunges forced to 30 (--expunge 30).
  Messages will be LMTP-forwarded to: /var/imap/socket/lmtp
  Recognized listener spam block responses are: 571 550 501 554
  No pre-connection command.
  No post-connection command.
  Single-drop mode: 1 local name(s) recognized.
        da...@dg...
  No interface requirement specified.
  No monitor interface specified.
  No plugin command specified.
  No plugout command specified.
  No UIDs saved from this host.
  Poll trace information will be added to the Received header.
Options for retrieving from de...@in...@pop.freeserve.net:
  True name of server is pop.freeserve.net.
  This host will be queried when no host is specified.
  Password = "xxxxxxxxxx".
  Protocol is POP3 (using default port).
  All available authentication methods will be tried.
  Server nonresponse timeout is 300 seconds (default).
  Default mailbox selected.
  All messages will be retrieved (--all on).
  Fetched messages will not be kept on the server (--keep off).
  Old messages will not be flushed before message retrieval (--flush off).
  Rewrite of server-local addresses is enabled (--norewrite off).
  Carriage-return stripping is disabled (stripcr off).
  Carriage-return forcing is disabled (forcecr off).
  Interpretation of Content-Transfer-Encoding is enabled (pass8bits off).
  MIME decoding is disabled (mimedecode off).
  Idle after poll is disabled (idle off).
  Nonempty Status lines will be kept (dropstatus off)
  Delivered-To lines will be kept (dropdelivered off)
  No received-message limit (--fetchlimit 0).
  Fetch message size limit is 100 (--fetchsizelimit 100).
  Do binary search of UIDs during 9 out of 10 polls (--fastuidl 10).
  No SMTP message batch limit (--batchlimit 0).
  Deletion interval between expunges forced to 30 (--expunge 30).
  Messages will be LMTP-forwarded to: /var/imap/socket/lmtp
  Recognized listener spam block responses are: 571 550 501 554
  No pre-connection command.
  No post-connection command.
  Single-drop mode: 1 local name(s) recognized.
        de...@dg...
  No interface requirement specified.
  No monitor interface specified.
  No plugin command specified.
  No plugout command specified.
  No UIDs saved from this host.
  No poll trace information will be added to the Received header.
.