I maintain a mailing list for our LUG and have a problem with some of the mailservers to which mail is sent. A few of the messages result in a syn_sent on the connection to the remote mail server. I understand from my search of the archives that some mailservers use this to combat SPAM and attempt to slow down the sending server. I am running RH6.1 with all the RH patches. This occurrence seems to stop sendmail from sending or at least slowing things to a crawl when the remote plays this game. Is there a fix to this or do I just throw the corresponding members off the mailling list? TIA Fred -- To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject.