diff options
Diffstat (limited to 'fetchmail.man')
| -rw-r--r-- | fetchmail.man | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fetchmail.man b/fetchmail.man index 5cab1cf5..0cfb5af0 100644 --- a/fetchmail.man +++ b/fetchmail.man @@ -683,14 +683,18 @@ to the mailserver. This creates a risk that name/password pairs might be snaffled with a packet sniffer or more sophisticated monitoring software. .PP -Retrieval and forwarding from multi-drop server mailboxes is only as -reliable as your mail server host's DNS service. Each host +Retrieval and forwarding from multi-drop server mailboxes is at most +as reliable as your mail server host's DNS service. Each host address part in each message of a multi-drop mailbox is checked with .BR gethostbyname (2) to see if it's an alias of the mail server. If it is, but the lookup fails due to network congestion or a crashed server, forwarding -will not get done correctly. +will not get done correctly. Note: this check will \fInot\fR catch +equivalences created by MX records! +.PP +The multi-drop mailbox code was hard to test thoroughly and may have obscure +failure modes, especially in the presence of DNS flakiness. .PP Under Linux, if fetchmail is run in daemon mode with the network inaccessible, each poll leaves a socket allocated but in CLOSE state |