Hello, Same email server setup for our school for the last three years SquirrelMail version 1.4.8-4.0.1..el5.centos.1 Now after editing the global address book for ALL staff for new teachers ,etc., the secretary is getting random errors/bounce backs from the server as the following: user@domain 550 unknown this is not always the same error for the same user. Bottom line, I am not sure if it is the squirrelmail address book itself or the sendmail or dovecot server needs more memory maybe? I don't think this is the case as I have not done any updating or server configuration changes. in the other words out of each staff entry in the address book at some point the address gets 'chopped off'. ( Of course all users 'after' this entry does not receive the email that has been sent) We have the address book setup in the following manner; A-C staff D-I staff etc when she sends to all entries a-z * with an attachment* this happens. It NEVER happens when she does not attach an Word document. I have tried to get the secretaries to use the mailman setup I have had setup but teachers are generally narrow minded and want s the email in their own inbox:(.Its a long story not worth explaining. Even at that this has not happened till this year when a few more teachers were entered in the global address book of Squirrelmail Thanks, Barry ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ----- squirrelmail-users mailing list Posting guidelines: http://squirrelmail.org/postingguidelines List address: squirrelmail-users@xxxxxxxxxxxxxxxxxxxxx List archives: http://news.gmane.org/gmane.mail.squirrelmail.user List info (subscribe/unsubscribe/change options): https://lists.sourceforge.net/lists/listinfo/squirrelmail-users