Member doesn't receive password reset

One of our members has accepted to be added to our site (890.toastmastersclubs.org) but when she tries to set a password she does not receive the email. I have tried deleting her from the site and re-adding but she still has the same issue. The user is Van My Luu vanluu2@comcast.net.
She has looked for all/any emails from server@toastmastersclubs.org.

Would be grateful for any tips for how to trouble shoot. Thanks!

ask her to check her spam email

Also suggest that she adds server@toastmastersclubs.org and agenda@toastmastersclubs.org to her email addressbook

comcast is accepting the email for delivery, she needs to contact comcast to find out what they are doing with her email.

She can give them this log extract to assist.

Aug 27 13:20:39 toastmastersclubs sendmail[27994]: x7RDK6w1027989: to=<vanluu2@comcast.net>, ctladdr= (501/502), delay=00:00:33, xdelay=00:00:33, mailer=esmtp, pri=121380, relay=mx1.comcast.net. [96.114.157.80], dsn=2.0.0, stat=Sent (2bOJiQIGKETP42bOVikwpj mail accepted for delivery)
Aug 28 04:40:22 toastmastersclubs sendmail[29948]: x7S4eEiM029862: to=<vanluu2@comcast.net>, ctladdr= (501/502), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=127036, relay=mx1.comcast.net. [96.114.157.80], dsn=2.0.0, stat=Sent (2pksiRi41ozGQ2pksi2CEE mail accepted for delivery)
Aug 28 16:07:43 toastmastersclubs sendmail[6023]: x7SG7GxY006020: to=<vanluu2@comcast.net>, ctladdr= (501/502), delay=00:00:27, xdelay=00:00:27, mailer=esmtp, pri=122190, relay=mx2.comcast.net. [68.87.20.5], dsn=2.0.0, stat=Sent (30TdiIv7vYwem30Toi9SzM mail accepted for delivery)
Aug 29 03:06:42 toastmastersclubs sendmail[5480]: x7T36g8b005477: to=<vanluu2@comcast.net>, ctladdr= (501/502), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=121380, relay=mx1.comcast.net. [96.114.157.80], dsn=2.0.0, stat=Sent (3AlmiT9MhlZbx3AlmiQcRl mail accepted for delivery)
Aug 29 03:11:42 toastmastersclubs sendmail[9257]: x7T3Bfxi009254: to=<vanluu2@comcast.net>, ctladdr= (501/502), delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=121380, relay=mx1.comcast.net. [96.114.157.80], dsn=2.0.0, stat=Sent (3AqcialVTZ0XE3AqciHTRK mail accepted for delivery)
Aug 29 05:43:54 toastmastersclubs sendmail[9657]: x7T5hrTg009654: to=<vanluu2@comcast.net>, ctladdr= (501/502), delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=131926, relay=mx1.comcast.net. [96.114.157.80], dsn=2.0.0, stat=Sent (3DDtiAIYPqAas3DDuin5JG mail accepted for delivery)