diff options
Diffstat (limited to 'fetchmail.man')
| -rw-r--r-- | fetchmail.man | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fetchmail.man b/fetchmail.man index 97a697e6..cf50667c 100644 --- a/fetchmail.man +++ b/fetchmail.man @@ -912,7 +912,7 @@ Also note that all multidrop features are ineffective in ETRN mode. The fundamental problem is that by having your mailserver toss several peoples' mail in a box, you may have thrown away potentially vital information about who each piece of mail was actually addressed to -(the `envelope address', as opposed to the addresses in the RFC822 +(the `envelope address', as opposed to the header addresses in the RFC822 To/Cc/Bcc headers). This `envelope address' is the address you need in order to reroute mail properly. .PP @@ -929,12 +929,15 @@ Alternatively, some SMTP listeners and/or mail servers insert a header in each message containing a copy of the envelope addresses. This header (when it exists) is often `X-Envelope-To'. Fetchmail's assumption about this can be changed with the -E or `envelope' option. +Note that writing an envelope header of this kind exposes the names +of recipients to all receivers of the messages; it is therefore +regarded by some administrators as a security/privacy problem. .PP Sometimes, unfortunately, neither of these methods works. When they both fail, fetchmail must fall back on the contents of To/Cc/Bcc headers to try to determine recipient addressees -- and these are not reliable. In particular, mailing-list software often ships mail with -the list broadcast address in the To header. +only the list broadcast address in the To header. .PP When .I fetchmail |