Some clients are sending from addresses like i.e. without a "friendly" name. It seems to me from RFC2822 that you should either have "Display Name " or just "someone@somewhere.org" (both without the quotes). Dovecot, not unreasonably, treats "" as having an empty Display Name, but this seems to confuse at least one client - our webmail ;) - which then displays "?" for the "from" address. The patch below tries to make dovecot treat empty display name as non-existent display name (so that the IMAP "ENVELOPE" command responds with "NIL" instead of "" in the relevant places). Best Wishes, Chris --- dovecot-1.0-stable/src/lib-mail/message-address.c.orig Fri Apr 8 12:30:34 2005 +++ dovecot-1.0-stable/src/lib-mail/message-address.c Mon Jun 20 10:42:23 2005 @@ -140,6 +140,10 @@ return -1; ctx->addr.name = p_strdup(ctx->pool, str_c(ctx->str)); + if (*ctx->addr.name == '\0') { + /* Cope with "<address>" without display name */ + ctx->addr.name = NULL; + } if (parse_angle_addr(ctx) < 0) { /* broken */ ctx->addr.domain = p_strdup(ctx->pool, "SYNTAX_ERROR"); -- --+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+- Christopher Wakelin, c.d.wakelin@reading.ac.uk IT Services Centre, The University of Reading, Tel: +44 (0)118 378 8439 Whiteknights, Reading, RG6 2AF, UK Fax: +44 (0)118 975 3094