diff options
Diffstat (limited to 'driver.c')
| -rw-r--r-- | driver.c | 58 |
1 files changed, 50 insertions, 8 deletions
@@ -101,7 +101,6 @@ static int is_host_alias(const char *name, struct query *ctl) { struct hostent *he; struct mxentry *mxp, *mxrecords; - int i; /* * The first two checks are optimizations that will catch a good @@ -359,6 +358,8 @@ struct query *ctl; /* query control record */ char *cp; struct idlist *idp, *xmit_names; int good_addresses, bad_addresses; + int from_header_ok; + int from_address_ok; #ifdef HAVE_RES_SEARCH int no_local_matches = FALSE; #endif /* HAVE_RES_SEARCH */ @@ -436,6 +437,7 @@ struct query *ctl; /* query control record */ { char *ap; + /* build a connection to the SMTP listener */ if (ctl->mda[0] == '\0' && ((sinkfp = smtp_open(ctl)) == NULL)) { free_uid_list(&xmit_names); @@ -443,18 +445,43 @@ struct query *ctl; /* query control record */ return(PS_SMTP); } - if (!fromhdr) + /* we must have a valid From header in order to proceed */ + if (fromhdr) + from_header_ok = TRUE; + else { fprintf(stderr, "fetchmail: I see no From header\n"); - return(PS_SMTP); + + /* + * This is not a transient error -- there's no way + * to recover from it on the next poll cycle. So + * fake one up that we know will be valid and set a + * notification flag, rather than getting stuck on this + * message. + */ + fromhdr = user; + from_header_ok = FALSE; } - if (SMTP_from(sinkfp, ap = nxtaddr(fromhdr)) != SM_OK) + /* tell the listener who sent the message */ + if (SMTP_from(sinkfp, ap = nxtaddr(fromhdr)) == SM_OK) + from_address_ok = TRUE; + else { fprintf(stderr, "fetchmail: SMTP listener doesn't like the From address `%s'\n", ap); - return(PS_SMTP); + from_address_ok = FALSE; + + /* + * No big deal. This will confuse the logging and + * put something midly misleading in the Received + * headers, but replies (which use the header From) + * won't be affected. + */ + if (SMTP_from(sinkfp, user) != SM_OK) + return(PS_SMTP); /* shouldn't happen */ } + /* now list its addressees */ for (idp = xmit_names; idp; idp = idp->next) if (SMTP_rcpt(sinkfp, idp->id) == SM_OK) good_addresses++; @@ -472,6 +499,7 @@ struct query *ctl; /* query control record */ return(PS_SMTP); } + /* tell it we're ready to send data */ SMTP_data(sinkfp); if (outlevel == O_VERBOSE) fputs("SMTP> ", stderr); @@ -512,9 +540,9 @@ struct query *ctl; /* query control record */ /* write error notifications */ #ifdef HAVE_RES_SEARCH - if (no_local_matches || bad_addresses) + if (no_local_matches || bad_addresses || !from_header_ok || !from_address_ok) #else - if (bad_addresses) + if (bad_addresses || !from_header_ok || !from_address_ok) #endif /* HAVE_RES_SEARCH */ { int errlen = 0; @@ -526,11 +554,25 @@ struct query *ctl; /* query control record */ if (no_local_matches) { strcat(errhd, "no recipient addresses matched declared local names"); - if (bad_addresses) + if (!from_header_ok || !from_address_ok || bad_addresses) strcat(errhd, "; "); } #endif /* HAVE_RES_SEARCH */ + if (!from_header_ok) + { + strcat(errhd, "no From header"); + if (!from_address_ok || bad_addresses) + strcat(errhd, "; "); + } + + if (!from_address_ok) + { + strcat(errhd, "listener rejected From address"); + if (bad_addresses) + strcat(errhd, "; "); + } + if (bad_addresses) { strcat(errhd, "SMTP listener rejected local recipient addresses: "); |