MailScanner slowed by large attachments

Julian Field jkf at
Sat Apr 20 11:03:13 IST 2002

What do the logs look like during this long wait?
Are you running with SpamAssassin enabled?
Have you tried disabling SpamAssassin support to see what effect that has?
4Mb is not a large attachment, and shouldn't cause any problem.

At 16:22 19/04/2002, Arthur Longhurst wrote:
>I run mailscanner on RedHat 7 with SophosAV. We are having problems with
>mail being delayed intermittently up to 2 hours. It seems that I can
>reproduce the symptoms by sending an email with a large (4Mb) attachment.
>All the mail then gets queued (viewing maillog entries) and takes ages to
>be dealt with until the large attachment has gone through.
>Looking at "top" the machine doesn't appear to be under undue strain but
>the mail gets slowed down tremendously.
>Any ideas how to solve this apart from telling the punters not send large
>email attachments :o)
>All the best - Art
>Optoelectronic Research Centre Network Manager

Julian Field                Teaching Systems Manager
jkf at         Dept. of Electronics & Computer Science
Tel. 023 8059 2817          University of Southampton
                             Southampton SO17 1BJ

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